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Liu P, Zheng Z, Wang H, Wang P, Hu Z, Gao HY. Characterize and Mediate Assembly of Triptycenes on Au(111) Surface. ACS NANO 2024. [PMID: 38861269 DOI: 10.1021/acsnano.4c02648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Herein, we report the assembly behavior of triptycenes with aldehyde (Trip-1) and amino (Trip-2) groups on pristine and iodine-passivated Au(111) surfaces by a combination of scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and density functional theory (DFT) calculation. On Au(111) surface, Trip-1 forms long trimer chains and two-dimensional islands via aldehyde-aldehyde hydrogen bonding in one dimension and π-π stacking of adjacent benzene rings in the other dimension. In contrast, Trip-2 lies as individuals or in disorderly stacked islands. Trip-2 and Trip-1 can be mixed in an arbitrary ratio. And Trip-2 molecules disrupt the ordered self-assembly structure of Trip-1 due to the formation of stronger aldehyde-amino hydrogen bonding. DFT, XPS, and Raman spectra confirm the conformational difference of Trip-1 and -2, as well as the aldehyde-amino hydrogen bonding formation in Trip-1 and Trip-2 mixture. On the iodine-passivated Au(111) surface, Trip-1 forms single-molecule chains and a hexagonal closely packed structure due to iodine interlayer mediation. Trip-2 molecules disrupt the hexagonal closely packed structure of Trip-1.
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Affiliation(s)
- Peizhen Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zichan Zheng
- Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, Tianjin 300350, China
| | - Hongchao Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Peichao Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhixin Hu
- Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, Tianjin 300350, China
| | - Hong-Ying Gao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Tianjin University, Tianjin 300350, China
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2
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González-González JS, Martínez-Santos A, Emparán-Legaspi MJ, Pineda-Contreras A, Martínez-Martínez FJ, Flores-Alamo M, García-Ortega H. Molecular structure and selective theophylline complexation by conformational change of diethyl N,N'-(1,3-phenylene)dicarbamate. Acta Crystallogr C Struct Chem 2024; 80:190-199. [PMID: 38712545 DOI: 10.1107/s2053229624003358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 04/16/2024] [Indexed: 05/08/2024] Open
Abstract
The receptor ability of diethyl N,N'-(1,3-phenylene)dicarbamate (1) to form host-guest complexes with theophylline (TEO) and caffeine (CAF) by mechanochemistry was evaluated. The formation of the 1-TEO complex (C12H16N2O4·C7H8N4O2) was preferred and involves the conformational change of one of the ethyl carbamate groups of 1 from the endo conformation to the exo conformation to allow the formation of intermolecular interactions. The formation of an N-H...O=C hydrogen bond between 1 and TEO triggers the conformational change of 1. CAF molecules are unable to form an N-H...O=C hydrogen bond with 1, making the conformational change and, therefore, the formation of the complex impossible. Conformational change and selective binding were monitored by IR spectroscopy, solid-state 13C nuclear magnetic resonance and single-crystal X-ray diffraction. The 1-TEO complex was characterized by IR spectroscopy, solid-state 13C nuclear magnetic resonance, powder X-ray diffraction and single-crystal X-ray diffraction.
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Affiliation(s)
- Juan Saulo González-González
- Instituto de Farmacobiología, Universidad de la Cañada, Carretera Teotitlán-San Antonio Nanahuatipán, km 1.7 s/n, Teotitlán de Flores Magón, Oaxaca 68540, Mexico
| | - Alfonso Martínez-Santos
- Instituto de Farmacobiología, Universidad de la Cañada, Carretera Teotitlán-San Antonio Nanahuatipán, km 1.7 s/n, Teotitlán de Flores Magón, Oaxaca 68540, Mexico
| | - María José Emparán-Legaspi
- Facultad de Ciencias Químicas, Universidad de Colima, km 9, Carretera Colima-Coquimatlán, Coquimatlán, Colima 28400, Mexico
| | - Armando Pineda-Contreras
- Facultad de Ciencias Químicas, Universidad de Colima, km 9, Carretera Colima-Coquimatlán, Coquimatlán, Colima 28400, Mexico
| | | | - Marcos Flores-Alamo
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Hector García-Ortega
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
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He V, Seibt S, Cadarso VJ, Neild A, Boyd BJ. Compartmentalised enzyme-induced phase transformations in self-assembling lipid systems. J Colloid Interface Sci 2024; 672:256-265. [PMID: 38838633 DOI: 10.1016/j.jcis.2024.05.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/29/2024] [Accepted: 05/14/2024] [Indexed: 06/07/2024]
Abstract
HYPOTHESIS Understanding the digestion of lipid-based pharmaceutical formulations and food systems is necessary for optimising drug and nutrient delivery and has been extensively studied in bulk emulsion systems using the pH-stat method [1]. However, this approach is not suitable for investigation of individual lipid droplets, in particular the interface where the lipase acts. Microfluidic approaches to study digestion at lipid-water interfaces using droplet trapping have been proposed, however the aqueous phase in that case washes over the interface presenting uncertainty over the stoichiometry of interactions [2]. The internal interface of a Janus-like droplet, containing distinct aqueous and lipid compartments, mimics the interface of a lipid droplet in aqueous solution with controlled stoichiometry [3]. Hence, it was hypothesised that the internal interface of Janus droplets can offer a precise way to study the enzymatic digestion of lipids formulations. EXPERIMENTS Using microfluidic methods, Janus-like droplets were formed by coalescing emulsion droplets containing lipid formulation and pancreatic lipase. Polarised light microscopy (PLM) and in-situ small-angle X-ray scattering (SAXS) were used to investigate the droplets. FINDINGS PLM revealed the growth of an aligned inverse hexagonal phase (H2), and with SAXS showed that this phase transformation and alignment resulted from enzymatic digestion. A subsequent partial transformation from H2 to inverse bicontinuous cubic phase occurred when simulated intestinal fluid was used instead of Tris buffer. Suggesting that phospholipids and bile salts could diffuse across the internal interface to locally affect their surroundings.
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Affiliation(s)
- Vincent He
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Susanne Seibt
- SAXS/WAXS Beamline, Australian Synchrotron (ANSTO), 800 Blackburn Rd, Clayton, VIC 3150, Australia
| | - Victor J Cadarso
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Adrian Neild
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia; Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
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Li M, Wang R, Bao Q. Hyper-spectra imaging analysis of PLGA microspheres via machine learning enhanced Raman spectroscopy. J Control Release 2024; 367:676-686. [PMID: 38309305 DOI: 10.1016/j.jconrel.2024.01.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Long-acting injectables (LAI) offer a cost-effective and patient-centric approach by reducing pill burden and improving compliance, leading to better treatment outcomes. Among various types of long-acting injectables, poly (lactic-co-glycolic acid) (PLGA) microspheres have been extensively investigated and reported in the literature. However, microsphere formulation development is still challenging due to the complexity of PLGA polymer, formulation screening, and processing, as well as time-consuming and cumbersome physicochemical characterization. A further challenge is the limited availability of drug substances in early formulation development. Therefore, there is a need to develop novel and advanced tools that can accelerate the early formulation development. In this manuscript, a novel comprehensive physicochemical characterization approach was developed by integrating Raman microscopy and the machine learning process. The physicochemical properties such as drug loading, particle size and size distribution, content uniformity/heterogeneity, and drug polymorphism of the microspheres can be obtained in a single run, without requiring separate methods for each attribute (e.g., liquid chromatography, particle size analyzer, thermal analysis, X-ray powder diffraction). This approach is non-destructive and can significantly reduce material consumption, sample preparation, labor work, and analysis time/cost, which will greatly facilitate the formulation development of PLGA microsphere products. In addition, the approach will potentially be beneficial in enabling automated high throughput screening of microsphere formulations.
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Affiliation(s)
- Minghe Li
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, USA
| | - Ruifeng Wang
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, USA; Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Quanying Bao
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, USA.
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Ge M, Wang Y, Zhang F, Wang Z, Li H, Xu D, Yao J. Study of low-frequency spectroscopic characteristics of γ-aminobutyric acid with THz and low-wavenumber Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123550. [PMID: 37864976 DOI: 10.1016/j.saa.2023.123550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/10/2023] [Accepted: 10/15/2023] [Indexed: 10/23/2023]
Abstract
γ-aminobutyric (GABA) is the most important inhibitory neurotransmitier in vertebrate central nervous systems. The content level of GABA is related to the different degree of malignancy gliomas. Thus, it can be considered a promising glioma biomarker. In this paper, the spectroscopic properties of GABA have been characterized by combining the THz spectroscopy with low-wavenumber Raman spectroscopy. The experimental results showed that, GABA exhibited three absorption peaks and three refractive index peaks in the range of 0.6-2.1 THz. The limit of detection can reach up to 0.428 % based on the absorption coefficient at the peak of 2.04 THz. Moreover, the low-wavenumber Raman spectrum of GABA showed seven characteristic peaks at 41.0, 50.8, 58.8, 77.2, 98.8, 115.6, 141.2 cm-1 in 0-150 cm-1 region. Moreover, the THz and low-wavenumber theoretical spectra of GABA were simulated with solid-state density function theory, respectively. The calculated results were in good agreement with the experimental observations. On the basis of calculated result, the vibrational motions of each THz and Raman characteristic modes were quantitatively decomposed by analytical mode-decoupling method, where the contribution percentages of external translation, external librations and intramolecular vibration of each vibration modes were analyzed Furthermore, the low-frequency characteristics of GABA was analyzed by combining the THz and low-wavenumber Raman spectroscopy. It is beneficial for the structural information analysis and quantitative identification of biomarker GABA in early stage diagnosis of glioma.
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Affiliation(s)
- Meilan Ge
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Yuye Wang
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China.
| | - Feng Zhang
- Crystal Materials Research Center, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Xinjiang, 830011, China
| | - Zelong Wang
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Haibin Li
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Degang Xu
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Jianquan Yao
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Optoelectronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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Ren S, Nian F, Chen X, Xue R, Chen F. Routes of Theophylline Monohydrate Dehydration Process Proposed by Mid-Frequency Raman Difference Spectra. J Pharm Sci 2023; 112:2863-2868. [PMID: 37336264 DOI: 10.1016/j.xphs.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/21/2023]
Abstract
Two routes of the dehydration process of theophylline monohydrate have been proposed in this work from mid-frequency Raman difference spectra (MFRDS) results and experiments. MFRDS can establish short-range order correlations among various theophylline crystal forms. MFRDS results indicate that the short-range order of metastable Form III is most similar to that of monohydrate, which explains that Form III is the main dehydration products in the mild dehydration process. The phenomenon that unstable amorphous theophylline intermediate phase would appear during the dehydration process of theophylline monohydrate was confirmed indirectly by Powder X-ray Diffraction (PXRD) and optical microscope and reported in the previous reports, which could cause the nucleation of Form II, as MFRDS results indicate short-range order of amorphous solid dispersion of theophylline is most similar to that of Form II. MFRDS analysis shows the advantages in studying the phase transformation of small organic molecule crystals.
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Affiliation(s)
- Shizhao Ren
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China.
| | - Fanglin Nian
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China
| | - Xiuzhi Chen
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China
| | - Rongrong Xue
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China
| | - Fenghua Chen
- School of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China.
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7
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Hatipoglu MK, Zaker Y, Willett DR, Gupta N, Rodriguez JD, Patankar S, Capella P, Yilmaz H. Old Polymorph, New Technique: Assessing Ritonavir Crystallinity Using Low-Frequency Raman Spectroscopy. Anal Chem 2023; 95:15325-15332. [PMID: 37796650 DOI: 10.1021/acs.analchem.3c02781] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Two decades ago, postmarket discovery of a second crystal form of ritonavir with lower solubility had major implications for drug manufacturers and patients. Since then, ritonavir has been reformulated via the hot-melt-extrusion process in an amorphous form. Here, quantitative low- and mid-frequency Raman spectroscopy methods were developed to characterize polymorphs, form I and form II, in commercial ritonavir 100 mg oral tablets as an alternate analysis approach compared to X-ray powder diffraction (XRPD). Crystallization in three lots of ritonavir products obtained from four separate manufacturers was assessed after storage under accelerated conditions at 40 °C and 75% relative humidity (RH). Results were compared with quantitative XRPD methods developed and validated according to ICH Q2 (R1) guidelines. In a four-week open-dish study, form I crystallization occurred in two of the four products and form II crystallization was detected in another ritonavir product. The limits of detection for XRPD, low-frequency Raman (LFR), and mid-frequency Raman (MFR) were determined to be 0.7, 0.8, and 0.5% for form I and 0.6, 0.6, and 1% for form II, respectively. Root-mean-squared-error of predictions were 0.6-1.0 and 0.6-2.5% for LFR- and MFR-based partial least-squares models. Further, ritonavir polymorphs could also be identified and detected directly from ritonavir tablets using transmission LFR. In summary, LFR was applied for the assessment of polymorphism in real-world samples. While providing analytical performance similar to conventional techniques, LFR reduced the single measurement time from 66 min (XRPD) to 10 s (LFR) without the need for tedious sample preparation procedures.
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Affiliation(s)
- Manolya K Hatipoglu
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
| | - Yeakub Zaker
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
| | - Daniel R Willett
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
| | - Nirzari Gupta
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
| | - Jason D Rodriguez
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
| | - Suhas Patankar
- Division of Immediate & Modified Release Products II, Office of Lifecycle Drug Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Peter Capella
- Division of Immediate & Modified Release Products II, Office of Lifecycle Drug Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Huzeyfe Yilmaz
- Division of Complex Drug Analysis, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, St. Louis, Missouri 63110, United States
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Wang CC, Chen YL, Lu TC, Lee C, Chang YC, Chan YF, Mathew P, Lin XR, Hsieh WR, Huang TY, Huang HL, Hwang TL. Design and evaluation of oral formulation for apixaban. Heliyon 2023; 9:e18422. [PMID: 37534003 PMCID: PMC10391955 DOI: 10.1016/j.heliyon.2023.e18422] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023] Open
Abstract
Non-valvular atrial fibrillation (NVAF) is a common form of cardiac arrhythmia that affects 1-1.5% of adults and roughly 10% of elderly adults with dysphagia. Apixaban is an anticoagulant referred to as a factor Xa inhibitor, which has been shown to reduce the risk of stroke and systemic embolism in cases of NVAF. Our objective in the current study was to formulate an orally disintegrating film to facilitate the administration of apixaban to elderly patients who have difficulty swallowing. Researchers have used a wide variety of cellulose-based or non-cellulose-based polymers in a variety of combinations to achieve specific characteristics related to film formation, disintegration performance, drug content, in vitro drug release, and stability. One of the two formulations in this study was specify that bioequivalence criteria met with respect to Cmax of the reference drug (ELIQUIS®) in terms of pharmacokinetic profile. Further research will be required to assess the applicability of orodispersible films created using colloidal polymers of high and low molecular weights to other drugs with poor solubility in water.
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Affiliation(s)
- Chien-Chiao Wang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Yu-Li Chen
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, 333, Taiwan
| | - Ta-Chien Lu
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Catherine Lee
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Yu-Chia Chang
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, 333, Taiwan
| | - Yen-Fan Chan
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, 333, Taiwan
| | - Philip Mathew
- Novum Pharmaceutical Research Inc. Toronto, ON, M1L 4S4, Canada
| | - Xing-Rong Lin
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Wen-Rung Hsieh
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Ting-Yun Huang
- TAHO Pharmaceuticals Ltd. Neihu Dist., Taipei City, 114, Taiwan
| | - Hsin-Lan Huang
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, 333, Taiwan
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan City, 333, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 243, Taiwan
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Yamamoto Y, Kajita M, Hirose Y, Shimada N, Fukami T, Koide T. Pharmaceutical Evaluation of Levofloxacin Orally Disintegrating Tablet Formulation Using Low Frequency Raman Spectroscopy. Pharmaceutics 2023; 15:2041. [PMID: 37631255 PMCID: PMC10459943 DOI: 10.3390/pharmaceutics15082041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/14/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
We evaluated the pharmaceutical properties of levofloxacin (LV) in the form of an orally disintegrating tablet (LVODT) to find a new usefulness of low frequency (LF) Raman spectroscopy. LVODT contained dispersed granules with diameters in the order of several hundred micrometers, which were composed of the active pharmaceutical ingredient (API), as confirmed by infrared (IR) microspectroscopy. On the contrary, the API and inactive pharmaceutical ingredients (non-APIs) were homogeneously distributed in LV tablet (LVT) formulations. Microscopic IR spectroscopy and thermal analyses showed that LVODT and LVT contained the API in different crystalline forms or environment around the API each other. Furthermore, powder X-ray diffraction showed that LVT contained a hemihydrate of the API, while LVODT showed a partial transition to the monohydrate form. This result was confirmed by microscopic LF Raman spectroscopy. Moreover, this method confirmed the presence of thin layers coating the outer edges of the granules that contained the API. Spectra obtained from these thin layers indicated the presence of titanium dioxide, suggesting that the layers coexisted with a polymer that masks the bitterness of API. The microscopic LF Raman spectroscopy results in this study indicated new applications of this method in pharmaceutical science.
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Affiliation(s)
- Yoshihisa Yamamoto
- Faculty of Pharmaceutical Sciences, Teikyo Heisei University, 4-21-2 Nakano, Nakano-ku, Tokyo 164-8530, Japan
| | - Mizuho Kajita
- Bio & Healthcare Division, HORIBA Ltd., 2 Miyanohigashi-cho, Kisshoin, Minami-ku, Kyoto 601-8510, Japan; (M.K.); (Y.H.)
| | - Yutaro Hirose
- Bio & Healthcare Division, HORIBA Ltd., 2 Miyanohigashi-cho, Kisshoin, Minami-ku, Kyoto 601-8510, Japan; (M.K.); (Y.H.)
| | - Naoki Shimada
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan;
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo 204-8588, Japan;
| | - Tatsuo Koide
- Division of Drugs, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki 210-9501, Japan;
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10
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Salim M, Fraser-Miller SJ, Bērziņš K, Sutton JJ, Gordon KC, Boyd BJ. In Situ Monitoring of Drug Precipitation from Digesting Lipid Formulations Using Low-Frequency Raman Scattering Spectroscopy. Pharmaceutics 2023; 15:1968. [PMID: 37514154 PMCID: PMC10383805 DOI: 10.3390/pharmaceutics15071968] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/09/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Low-frequency Raman spectroscopy (LFRS) is a valuable tool to detect the solid state of amorphous and crystalline drugs in solid dosage forms and the transformation of drugs between different polymorphic forms. It has also been applied to track the solubilisation of solid drugs as suspensions in milk and infant formula during in vitro digestion. This study reports the use of LFRS as an approach to probe drug precipitation from a lipid-based drug delivery system (medium-chain self-nanoemulsifying drug delivery system, MC-SNEDDS) during in vitro digestion. Upon lipolysis of the digestible components in MC-SNEDDS containing fenofibrate as a model drug, sharp phonon peaks appeared at the low-frequency Raman spectral region (<200 cm-1), indicating the precipitation of fenofibrate in a crystalline form from the formulation. Two multivariate data analysis approaches (principal component analysis and partial least squares discriminant analysis) and one univariate analysis approach (band ratios) were explored to track these spectral changes over time. The low-frequency Raman data produces results in good agreement with in situ small angle X-ray scattering (SAXS) measurements with all data analysis approaches used, whereas the mid-frequency Raman requires the use of PLS-DA to gain similar results. This suggests that LFRS can be used as a complementary, and potentially more accessible, technique to SAXS to determine the kinetics of drug precipitation from lipid-based formulations.
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Affiliation(s)
- Malinda Salim
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Sara J Fraser-Miller
- Te Whai Ao-Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Kārlis Bērziņš
- Te Whai Ao-Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Joshua J Sutton
- Te Whai Ao-Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Keith C Gordon
- Te Whai Ao-Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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11
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Guinet Y, Paccou L, Hédoux A. Low-Frequency Raman Spectroscopy: An Exceptional Tool for Exploring Metastability Driven States Induced by Dehydration. Pharmaceutics 2023; 15:1955. [PMID: 37514141 PMCID: PMC10383856 DOI: 10.3390/pharmaceutics15071955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
The use of low-frequency Raman spectroscopy (LFRS; ω < 150 cm-1) is booming in the pharmaceutical industry. Specific processing of spectra is required to use the wealth of information contained in this spectral region. Spectra processing and the use of LFRS for analyzing phase transformations in molecular materials are detailed herein from investigations on the devitrification of ibuprofen. LFRS was used to analyze the dehydration mechanism of two hydrates (theophylline and caffeine) of the xanthine family. Two mechanisms of solid-state transformation in theophylline were determined depending on the relative humidity (RH) and temperature. At room temperature and 1% RH, dehydration is driven by the diffusion mechanism, while under high RH (>30%), kinetic laws are typical of nucleation and growth mechanism. By increasing the RH, various metastability driven crystalline forms were obtained mimicking successive intermediate states between hydrate form and anhydrous form achieved under high RH. In contrast, the dehydration kinetics of caffeine hydrate under various RH levels can be described by only one master curve corresponding to a nucleation mechanism. Various metastability driven states were achieved depending on the RH, which can be described as intermediate between forms I and II of anhydrous caffeine.
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Affiliation(s)
- Yannick Guinet
- UMR 8207-UMET-Unité Matériaux et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, F-59000 Lille, France
| | - Laurent Paccou
- UMR 8207-UMET-Unité Matériaux et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, F-59000 Lille, France
| | - Alain Hédoux
- UMR 8207-UMET-Unité Matériaux et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, F-59000 Lille, France
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12
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Wallace CS, Davis MP, Korter TM. Low-Frequency Raman Spectroscopy of Pure and Cocrystallized Mycophenolic Acid. Pharmaceutics 2023; 15:1924. [PMID: 37514110 PMCID: PMC10384077 DOI: 10.3390/pharmaceutics15071924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/26/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
The aqueous solubility of solid-state pharmaceuticals can often be enhanced by cocrystallization with a coformer to create a binary cocrystal with preferred physical properties. Greater understanding of the internal and external forces that dictate molecular structure and intermolecular packing arrangements enables more efficient design of new cocrystals. Low-frequency (sub-200 cm-1) Raman spectroscopy experiments and solid-state density functional theory simulations have been utilized together to investigate the crystal lattice vibrations of mycophenolic acid, an immunosuppressive drug, in its pure form and as a cocrystal with 2,2'-dipyridylamine. The lattice vibrations primarily consist of large-amplitude translations and rotations of the crystal components, thereby providing insights into the critical intermolecular forces governing cohesion of the molecular solids. The simulations reveal that despite mycophenolic acid having a significantly unfavorable conformation in the cocrystal as compared to the pure solid, the cocrystal exhibits greater thermodynamic stability over a wide temperature range. The energetic penalty due to the conformational strain is more than compensated for by the strong intermolecular forces between the drug and 2,2'-dipyridylamine. Quantifying the balance of internal and external energy factors in cocrystal formation indicates a path forward in the development of future mycophenolic acid cocrystals.
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Affiliation(s)
- Catherine S Wallace
- Department of Chemistry, Syracuse University, 1-133 Center for Science and Technology, Syracuse, NY 13244-4100, USA
| | - Margaret P Davis
- Department of Chemistry, Syracuse University, 1-133 Center for Science and Technology, Syracuse, NY 13244-4100, USA
| | - Timothy M Korter
- Department of Chemistry, Syracuse University, 1-133 Center for Science and Technology, Syracuse, NY 13244-4100, USA
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13
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Remoto PIJG, Bērziņš K, Fraser-Miller SJ, Korter TM, Rades T, Rantanen J, Gordon KC. Exploring the Solid-State Landscape of Carbamazepine during Dehydration: A Low Frequency Raman Spectroscopy Perspective. Pharmaceutics 2023; 15:pharmaceutics15051526. [PMID: 37242768 DOI: 10.3390/pharmaceutics15051526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
The solid-state landscape of carbamazepine during its dehydration was explored using Raman spectroscopy in the low- (-300 to -15, 15 to 300) and mid- (300 to 1800 cm-1) frequency spectral regions. Carbamazepine dihydrate and forms I, III, and IV were also characterized using density functional theory with periodic boundary conditions and showed good agreement with experimental Raman spectra with mean average deviations less than 10 cm-1. The dehydration of carbamazepine dihydrate was examined under different temperatures (40, 45, 50, 55, and 60 °C). Principal component analysis and multivariate curve resolution were used to explore the transformation pathways of different solid-state forms during the dehydration of carbamazepine dihydrate. The low-frequency Raman domain was able to detect the rapid growth and subsequent decline of carbamazepine form IV, which was not as effectively observed by mid-frequency Raman spectroscopy. These results showcased the potential benefits of low-frequency Raman spectroscopy for pharmaceutical process monitoring and control.
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Affiliation(s)
- Peter Iii J G Remoto
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Kārlis Bērziņš
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Sara J Fraser-Miller
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Timothy M Korter
- Department of Chemistry, Center for Science and Technology, Syracuse University, Syracuse, NY 13244, USA
| | - Thomas Rades
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Jukka Rantanen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Keith C Gordon
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
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14
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Joshi R, Adhikari S, Pil Son J, Jang Y, Lee D, Cho BK. Au nanogap SERS substrate for the carbaryl pesticide determination in juice and milk using chemomterics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122734. [PMID: 37080052 DOI: 10.1016/j.saa.2023.122734] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
Conventional spectroscopic methods like IR, and Raman are not very effective at detecting low levels of pesticides or harmful chemicals in food matrices. A quick, highly accurate approach that can identify pesticides present in different food products at lower levels must be developed in order to address this problem and ensure food safety. In this study, a highly sensitive and uniform wafer-scale Au nanogap surface-enhanced Raman spectroscopy (SERS) substrate was used for the quantitative analysis of carbaryl pesticide levels in standard solution, mango juice, and milk samples using chemometrics. Carbaryl was detected up to 3 ppb concentration levels for all three group of samples. However, due to the higher sensitivity, uniformity, and enhancement factors of the SERS substrate used in this investigation, the limit of detection (LOD) values for the standard solution, mango juice, and milk were 0.37 ppb, 0.57 ppb, and 0.15 ppb at 1380 cm-1, 1380 cm-1, and 1364 cm-1 wavenumber ranges. In order to predict different carbaryl concentrations (1, 2, 3, 4, and 5 ppb), the variable importance in projection (VIP) method combined with partial least squares regression (PLSR) and attained the coefficient of determination (R2) values of 0.994, 0.989, and 0.978 along with minimum root mean square error (RMSE) values of 0.112, 0.190, and 0.278 ppb for the prediction datasets. Furthermore, PLS-DA was able to distinguish between pure and adulterated samples with the highest classification accuracy of 100 % for a standard solution, and mango juice and 94.4 % for milk samples. Considering this, we can conclude that the SERS Au Nanogap substrate can rapidly and effectively detect carbaryl pesticides quantitatively and qualitatively in mango juice and milk.
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Affiliation(s)
- Rahul Joshi
- Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Samir Adhikari
- Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jong Pil Son
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yudong Jang
- Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Donghan Lee
- Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea; Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Byoung-Kwan Cho
- Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon 34134, Republic of Korea; Department of Smart Agricultural Systems, College of Agricultural and Life Science, Chungnam National University, 99 Daehak-to, Yuseong-gu, Daejeon 34134, Republic of Korea.
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15
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Guinet Y, Paccou L, Hédoux A. Analysis of Co-Crystallization Mechanism of Theophylline and Citric Acid from Raman Investigations in Pseudo Polymorphic Forms Obtained by Different Synthesis Methods. Molecules 2023; 28:molecules28041605. [PMID: 36838593 PMCID: PMC9960353 DOI: 10.3390/molecules28041605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
Designing co-crystals can be considered as a commonly used strategy to improve the bioavailability of many low molecular weight drug candidates. The present study has revealed the existence of three pseudo polymorphic forms of theophylline-citric acid (TP-CA) co-crystal obtained via different routes of synthesis. These forms are characterized by different degrees of stability in relation with the strength of intermolecular forces responsible for the co-crystalline cohesion. Combining low- and high-frequency Raman investigations made it possible to identify anhydrous and hydrate forms of theophylline-citric acid co-crystals depending on the preparation method. It was shown that the easiest form to synthesize (form 1'), by milling one hydrate with an anhydrous reactant, is very metastable, and transforms into the anhydrous form 1 upon heating or into the hydrated form 2 when it is exposed to humidity. Raman investigations performed in situ during the co-crystallization of forms 1 and 2 have shown that two different types of H-bonding ensure the co-crystalline cohesion depending on the presence of water. In the hydrated form 2, the cohesive forces are related to strong O-H … O H-bonds between water molecules and the reactants. In the anhydrous form 1, the co-crystalline cohesion is ensured by very weak H-bonds between the two anhydrous reactants, interpreted as corresponding to π-H-bonding. The very weak strength of the cohesive forces in form 1 explains the difficulty to directly synthesize the anhydrous co-crystal.
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16
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Haku R, Takatori K, Suzuki N, Ono M, Titapiwatanakun V, Fukami T. Exploration and characterization of a novel cocrystal hydrate consisting of captopril, an amino acid-derived drug. CrystEngComm 2023. [DOI: 10.1039/d3ce00181d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
We found a novel cocrystal consisting of captopril, which is an amino acid-derived drug having a thiol group, and l-proline by using nano-spot-screening with LF-Raman. This cocrystal hydrate showed high hygroscopicity resulted from changes in intermolecular interactions.
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Affiliation(s)
- Ryotaro Haku
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Kazuhiko Takatori
- Department of Synthetic Organic Chemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Naoto Suzuki
- Laboratory of Pharmaceutics, School of Pharmacy, Nihon University, 7-7-7 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Makoto Ono
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Varin Titapiwatanakun
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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17
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Sun Z, Lin B, Yang X, Zhao B, Zhang H, Dong Q, Zhong L, Zhang S, Zhang M, Xu X, Dong H, Li H, Li L, Nie L, Zang H. Review of the Application of Raman Spectroscopy in Qualitative and Quantitative Analysis of Drug Polymorphism. Curr Top Med Chem 2023; 23:1340-1351. [PMID: 36567287 DOI: 10.2174/1568026623666221223113342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 11/07/2022] [Accepted: 11/16/2022] [Indexed: 12/27/2022]
Abstract
Drug polymorphism is an important factor affecting the drugs quality and clinical efficacy. Therefore, great attention should be paid to the crystal analysis of drugs with their researching and evaluating part. With the booming development of Raman spectroscopy in recent years, more and more crystal analysis investigations were based on vibrational spectroscopy. This review mainly discussed the qualitative and quantitative analysis of active pharmaceutical ingredients (API) and pharmaceutical preparation with Raman spectroscopy. On basis of the determination of the vibration mode of drug molecules and the analysis of their chemical structure, this method had the advantages of universal, non-destructive, fast determination, low samples and cost, etc. This review provides theoretical and technical support for crystal structure, which are worth popularizing. It is expected that it will be helpful to relevant government management institutions, pharmaceutical scientific research institutions and pharmaceutical manufacturers.
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Affiliation(s)
- Zhongyu Sun
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Boran Lin
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xiangchun Yang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Bing Zhao
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Hui Zhang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Qin Dong
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Liang Zhong
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Shuaihua Zhang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Mengqi Zhang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xiuhua Xu
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Hailing Dong
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Haoyuan Li
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Lian Li
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Jinan, 250012, Shandong, China
| | - Lei Nie
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Hengchang Zang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
- Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Jinan, 250012, Shandong, China
- National Glycoengineering Research Center, Shandong University, Jinan, 250012, Shandong, China
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18
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Masciocchi N, Abbinante VM, Zambra M, Barreca G, Zampieri M. Thermal and Structural Characterization of Two Crystalline Polymorphs of Tafamidis Free Acid. Molecules 2022; 27:7411. [PMID: 36364244 PMCID: PMC9656987 DOI: 10.3390/molecules27217411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/19/2022] [Accepted: 10/25/2022] [Indexed: 09/05/2023] Open
Abstract
Tafamidis, chemical formula C14H7Cl2NO3, is a drug used to delay disease progression in adults suffering from transthyretin amyloidosis, and is marketed worldwide under different tradenames as a free acid or in the form of its meglumine salt. The free acid (CAS no. 594839-88-0) is reported to crystallize as distinct (polymorphic) crystal forms, the thermal stability and structural features of which remained thus far undisclosed. In this paper, we present-by selectively isolating highly pure batches of Tafamidis Form 1 and Tafamidis Form 4-the full characterization of these solids, in terms of crystal structures (determined using state-of-the-art structural powder diffraction methods) and spectroscopic and thermal properties. Beyond conventional thermogravimetric and calorimetric analyses, variable-temperature X-ray diffraction was employed to measure the highly anisotropic response of these (poly)crystalline materials to thermal stimuli and enabled the determination of the linear and volumetric thermal expansion coefficients and of the related indicatrix. Both crystal phases are monoclinic and contain substantially flat and π-π stacked Tafamidis molecules, arranged as centrosymmetric dimers by strong O-H···O bonds; weaker C-H···N contacts give rise, in both polymorphs, to infinite ribbons, which guarantee the substantial stiffness of the crystals in the direction of their elongation. Complete knowledge of the structural models will foster the usage of full-pattern quantitative phase analyses of Tafamidis in drug and polymorphic mixtures, an important aspect in both the forensic and the industrial sectors.
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Affiliation(s)
- Norberto Masciocchi
- Dipartimento di Scienza e Alta Tecnologia e To.Sca.Lab., Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | | | - Marco Zambra
- Dipartimento di Scienza e Alta Tecnologia e To.Sca.Lab., Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
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19
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Fateixa S, Nogueira HIS, Paixão JA, Fausto R, Trindade T. Insightful vibrational imaging study on the hydration mechanism of carbamazepine. Phys Chem Chem Phys 2022; 24:19502-19511. [PMID: 35938321 DOI: 10.1039/d2cp02185d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anhydrous carbamazepine (CBZ) is an anti-convulsant drug commonly used to treat epilepsy and relieve trigeminal neuralgia. The presence of the dihydrate form in commercial CBZ tablets can change the dissolution rate of the active pharmaceutical ingredient (API), thus decreasing its activity. The hydration transformation can occur during wet granulation or storage, within a few weeks, depending on the ambient conditions. This work aims to investigate the effect of relative humidity (RH) in the transition of pure anhydrous CBZ (CBZ III) into the hydrate form by using confocal Raman microscopy with cluster analysis (CA). Firstly, several tablets of pure CBZ III containing different amounts of CBZ DH (50%, 10%, 1%, 0.5%) were prepared and analyzed by Raman imaging with CA. Our results show that CBZ DH crystals can be detected in the CBZ III tablets, at as low a concentration as 0.5%, giving distinct Raman features for the analysed polymorphs. The stability of pure anhydrous (CBZ III) tablets was then monitored by Raman imaging at room temperature (20-22 °C) and different RH (6%, 60% and 89%). The Raman imaging with CA showed that the anhydrous CBZ tablets start to convert into the hydrate form after 48 h, and it completely changes after 120 hours (5 days) at RH 89%. The tablets exposed to RH 6% and 60% did not demonstrate the presence of CBZ DH after 1 week of exposure. The exposure time was extended for 9 months in the former, and no CBZ DH was observed. A comparative study using IR imaging was also performed, demonstrating the viability of these vibrational imaging techniques as valuable tools to monitor the hydration process of active pharmaceutical ingredients.
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Affiliation(s)
- Sara Fateixa
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Helena I S Nogueira
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - José A Paixão
- CFisUC, Department of Physics, University of Coimbra, P-3004-516 Coimbra, Portugal
| | - Rui Fausto
- CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal
| | - Tito Trindade
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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20
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Davis MP, Korter TM. Low-Frequency Vibrational Spectroscopy and Quantum Mechanical Simulations of the Crystalline Polymorphs of the Antiviral Drug Ribavirin. Mol Pharm 2022; 19:3385-3393. [PMID: 35950677 PMCID: PMC9449968 DOI: 10.1021/acs.molpharmaceut.2c00509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Crystal polymorphism is a common phenomenon in pharmaceutical
solids
and a critical issue when considering the formulation of therapeutics
since multiple polymorphs may form during drug manufacturing. Low-frequency
vibrational spectroscopy is sensitive to polymorphic content, and
in this work, terahertz time-domain spectroscopy and low-frequency
Raman spectroscopy were utilized in the study of crystalline ribavirin,
a widely applicable antiviral. Characteristic spectra with numerous
peaks in the sub-200 cm–1 region were obtained of
the more common polymorph of ribavirin (Form II). Solid-state density
functional theory (ss-DFT) simulations were then used to optimize
the crystal structure of this polymorph and calculate the frequencies
and spectral intensities of the lattice vibrations in the low-frequency
region. The near-harmonic thermal behavior of the sample with cooling
enabled excellent agreement between experiment and theory to be achieved,
emphasizing the quality of the applied model, and the observed spectral
peaks could be assigned to specific atomic motions in the solid. Form
I and Form II polymorphs of ribavirin were both investigated with
ss-DFT to understand the different aspects governing the relative
stabilities of these solids. The ss-DFT simulations of the polymorph
energies revealed that Form II is more stable at all temperatures
due to a stronger cohesive energy than Form I; however, ribavirin
in Form I has a significantly lower conformational energy. The finding
of monotropism appears to conflict with the reported enantiotropism
of the ribavirin polymorphs but ultimately confirms that crystal defects
in the real samples greatly affect the thermodynamic relationship
of the crystals.
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Affiliation(s)
- Margaret P Davis
- Department of Chemistry, Syracuse University, 1-133 Center for Science and Technology, Syracuse, New York 13244-4100, United States
| | - Timothy M Korter
- Department of Chemistry, Syracuse University, 1-133 Center for Science and Technology, Syracuse, New York 13244-4100, United States
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21
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Ge M, Wang Y, Zhu J, Wu B, Xu D, Yao J. Low-Frequency Vibrational Spectroscopy Characteristic of Pharmaceutical Carbamazepine Co-Crystals with Nicotinamide and Saccharin. SENSORS 2022; 22:s22114053. [PMID: 35684674 PMCID: PMC9185236 DOI: 10.3390/s22114053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 12/10/2022]
Abstract
The pharmaceutical co-crystal has attracted increasing interest due to the improvement of physicochemical properties of active pharmaceutical ingredients. The characterization of pharmaceutical co-crystal is an integral part of the pharmaceutical field. In this paper, the low-frequency vibrational properties for carbamazepine co-crystals with nicotinamide and saccharin (CBZ-NIC and CBZ-SAC) have been characterized by combining the THz spectroscopy with low-wavenumber Raman spectroscopy. The experiment results show that, compared with the individual constituents, CBZ-NIC and CBZ-SAC co-crystals not only have different characteristic absorption peaks in the 0.3-2.5 THz region, but also have significant low-wavenumber Raman characteristic peaks in 0–100 cm−1. Density functional theory was performed to simulate the terahertz and low-wavenumber Raman spectra of the two co-crystals, where the calculation agreed well with the measured vibrational peak positions. The vibrational modes of CBZ-NIC and CBZ-SAC co-crystals were assigned through comparing theoretical results with the experimental spectra. Meanwhile, the low-frequency infrared and/or Raman active of characteristic peaks for such co-crystals were discussed. The results indicate the combination of THz spectroscopy and low-wavenumber Raman spectroscopy can provide more comprehensive low-frequency vibrational information for pharmaceutical co-crystals, such as collective vibration and skeleton vibration, which could play an important role in pharmaceutical science.
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Affiliation(s)
- Meilan Ge
- Institute of Laser and Optoelectronics, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; (M.G.); (D.X.); (J.Y.)
- Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Yuye Wang
- Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
- Correspondence:
| | - Junfeng Zhu
- Science and Technology on Electronic Test & Measurement Laboratory, Qingdao 266555, China; (J.Z.); (B.W.)
| | - Bin Wu
- Science and Technology on Electronic Test & Measurement Laboratory, Qingdao 266555, China; (J.Z.); (B.W.)
| | - Degang Xu
- Institute of Laser and Optoelectronics, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; (M.G.); (D.X.); (J.Y.)
- Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Jianquan Yao
- Institute of Laser and Optoelectronics, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China; (M.G.); (D.X.); (J.Y.)
- Key Laboratory of Optoelectronic Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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22
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Fateixa S, Nogueira HIS, Trindade T. Carbamazepine polymorphism: a re-visitation using Raman imaging. Int J Pharm 2022; 617:121632. [PMID: 35245634 DOI: 10.1016/j.ijpharm.2022.121632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/25/2022] [Accepted: 02/28/2022] [Indexed: 10/19/2022]
Abstract
Raman imaging methods have appeared in the last years as a powerful approach to monitoring the quality of pharmaceutical compounds. Because polymorphism occurs in many crystalline pharmaceutical compounds, it is essential to monitor polymorphic transformations induced by different external stimulus, such as temperature changes, to which those compounds may be submitted. Raman imaging with k-means cluster analysis (CA) is used here as an essential technique to investigate structural and chemical transformations occurring in carbamazepine p-monoclinic (CBZ III) into carbamazepine triclinic (CBZ I) when submitted to temperatures near the melting point of CBZ III (178 °C) and CBZ I (193°C). CBZ III commercial powder and laboratorial prepared CBZ I were analyzed by differential scanning calorimetry, powder X-ray diffraction and Raman spectroscopy with variable temperature. After thermal treatment, the resultant CBZ powder was evaluated by Raman imaging, in which all imaging data was analyzed using CA. Raman imaging allowed the identification of different polymorphs of CBZ (CBZ III and CBZ I) and iminostilbene (IMS), a degradation product of CBZ, in the treated samples, depending on the heating treatment method.
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Affiliation(s)
- Sara Fateixa
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Helena I S Nogueira
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
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23
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Damle VH, Aviv H, Tischler YR. Identification of Enantiomers Using Low-Frequency Raman Spectroscopy. Anal Chem 2022; 94:3188-3193. [PMID: 35148067 DOI: 10.1021/acs.analchem.1c04710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Distinguishing between d and l enantiomers is of important scientific interest, especially for the pharmaceutical industry. Enantiomeric differentiation in the solid form is repeatedly presented as a challenge in the research community. Raman spectroscopy is a nondestructive tool, widely used for the characterization of different materials by probing their vibrational modes. The low-frequency region of the Raman spectrum reveals lattice-level interactions and global fluctuations in the molecule. Lower frequencies correspond to vibrations arising from weaker bonds and long-range interactions and hence are very susceptible to polarization changes. This work presents low-frequency Raman (LFR) spectroscopy as a facile technique to identify enantiomers. The optical setup of conventional Raman spectroscopy is engineered such that the excitation and collection geometries use an asymmetrical focal cone. In addition, a half-wave retarder is added to the excitation path and a Glan-Taylor polarizer is added to the collection path, and these modifications allow us to select the polarization plane for both excitation and collection geometries. The asymmetry in the foci when using a polarized beam for excitation provides different intensities of the collected signal for each polarization plane. In a calibrated system, one can define the chirality of an analyte by comparing the intensity of the LFR signal along orthogonal sets of polarization planes. For nonchiral molecules, the spectral intensity is always higher in the co-polarized plane when compared to the orthogonally depolarized plane, as expected. This contrast in the intensity of Raman spectra serves as a distinct tool for identifying enantiomers.
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Affiliation(s)
- Vinayaka Harshothama Damle
- Bar-Ilan Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Hagit Aviv
- Bar-Ilan Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Yaakov R Tischler
- Bar-Ilan Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
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24
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Li Y, Sun Y, Li Q, Lei J, Yang B, Shen Y, Cai Y, Deng X. Study of temperature-dependent terahertz spectra of isonicotinamide in the form I using the quasi-harmonic approximation. Chemphyschem 2022; 23:e202100849. [PMID: 35098625 DOI: 10.1002/cphc.202100849] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/20/2022] [Indexed: 11/08/2022]
Abstract
Anharmonicity of molecular vibrational motions is closely associated with the thermal property of crystals. However, the origin of anharmonicity is still not fully understood. Low-frequency vibrations, which are usually defined in the terahertz (THz) range, show excellent sensitivity to anharmonicity. In this work, anharmonicity of isonicotinamide in the form I was investigated by using temperature-dependent terahertz time-domain spectroscopy and quasi-harmonic approximation (QHA) approach at PBE-D3 and PBE-MBD levels. Both DFT calculations suggest the variation of p-p stacking conformation dominates in the thermal expansion of unit cell. The frequency shifts of the modes in THz range obtained by QHA approach are found to be qualitatively consistent with the observation, demonstrating QHA approach is a useful tool for the interpretation of frequency shifts of modes induced by temperature.
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Affiliation(s)
- Yin Li
- Nanchang University, Department of Physics, Nanchang, CHINA
| | - Yiwen Sun
- Shenzhen University, School of Biomedical Engineering, Shenzhen, CHINA
| | - Qiqi Li
- Shenzhen University, School of Biomedical Engineering, Shenzhen, CHINA
| | - Jiangtao Lei
- Nanchang University, Institute of Space Science and Technology, Nanchang, CHINA
| | - Bo Yang
- Nanchang University, Department of Materials and Chemicals, Nanchang, CHINA
| | - Yun Shen
- Nanchang University, Department of Physics, Nanchang, CHINA
| | - Yingxiang Cai
- Nanchang University, Department of Physics, Nanchang, CHINA
| | - Xiaohua Deng
- Nanchang University, department of physics, Xuefu Avenue 999, Nanchang City, Jiangxi Province, 330031, Nanchang, CHINA
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25
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Clapham ML, Leighton RE, Douglas CJ, Frontiera RR. Beyond single crystals: Imaging rubrene polymorphism across crystalline batches through lattice phonon Raman microscopy. J Chem Phys 2021; 155:234703. [PMID: 34937360 DOI: 10.1063/5.0065496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Polymorphism is an issue troubling numerous scientific fields. A phenomenon where molecules can arrange in different orientations in a crystal lattice, polymorphism in the field of organic photovoltaic materials can dramatically change electronic properties of these materials. Rubrene is a benchmark photovoltaic material showing high carrier mobility in only one of its three polymorphs. To use rubrene in devices, it is important to quantify the polymorph distribution arising from a particular crystal growth method. However, current methods for characterizing polymorphism are either destructive or inefficient for batch scale characterization. Lattice phonon Raman spectroscopy has the ability to distinguish between polymorphs based on low frequency intermolecular vibrations. We present here the addition of microscopy to lattice phonon Raman spectroscopy, which allows us to not only characterize polymorphs efficiently and nondestructively through Raman spectroscopy but also concurrently gain information on the size and morphology of the polymorphs. We provide examples for how this technique can be used to perform large, batch scale polymorph characterization for crystals grown from solution and physical vapor transport. We end with a case study showing how Raman microscopy can be used to efficiently optimize a green crystal growth method, selecting for large orthorhombic crystals desired for rubrene electronic device applications.
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Affiliation(s)
- Margaret L Clapham
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Ryan E Leighton
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - Renee R Frontiera
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
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26
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Sakamoto N, Tsuno N, Koyama R, Gato K, Titapiwatanakun V, Takatori K, Fukami T. Four Novel Pharmaceutical Cocrystals of Oxyresveratrol, Including a 2 : 3 Cocrystal with Betaine. Chem Pharm Bull (Tokyo) 2021; 69:995-1004. [PMID: 34602581 DOI: 10.1248/cpb.c21-00375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cocrystal engineering can alter the physicochemical properties of a drug and generate a superior drug candidate for formulation design. Oxyresveratrol (ORV) exhibits a poor solubility in aqueous environments, thereby resulting in a poor bioavailability. Extensive cocrystal screening of ORV with 67 cocrystal formers (coformers) bearing various functional groups was therefore conducted using grinding, liquid-assisted grinding, solvent evaporation, and slurry methods. Six cocrystals (ORV with betaine (BTN), L-proline (PRL), isonicotinamide, nicotinamide, urea, and ethyl maltol) were found, including four novel cocrystals. Powder X-ray diffraction, low frequency Raman spectroscopy, and thermal analysis revealed unique crystal forms in all obtained samples. Conventional Raman and infrared data differentiated the cocrystals by the presence or absence of a hydrogen bond interacting with the aromatic ring of ORV. The crystal structures were then elucidated by single-crystal X-ray diffraction. Two new cocrystals consisting of ORV : BTN (2 : 3) and ORV : PRL : H2O (1 : 2 : 1) were identified, and their crystal structures were solved. We report novel cocrystalline solids of ORV with improved aqueous solubilities and the unique cage-like crystal structures.
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Affiliation(s)
- Nasa Sakamoto
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Naoya Tsuno
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Ryotaro Koyama
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Katsuhiko Gato
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Varin Titapiwatanakun
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University
| | - Kazuhiko Takatori
- Department of Synthetic Organic Chemistry, Meiji Pharmaceutical University
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
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27
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Abstract
Abstract
We revisit low frequency coherent Raman spectroscopy (LF-CRS) and present a unified theoretical background that provides consistent physical pictures of LF-CRS signal generation. Our general framework allows to compute the signal to noise ratio in the multitude of possible LF-CRS, and more generally CRS, experimental implementations both in the spectral and time domain.
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28
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Paiva EM, Li Q, Zaczek AJ, Pereira CF, Rohwedder JJR, Zeitler JA. Understanding the Metastability of Theophylline FIII by Means of Low-Frequency Vibrational Spectroscopy. Mol Pharm 2021; 18:3578-3587. [PMID: 34428059 DOI: 10.1021/acs.molpharmaceut.1c00476] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
While theophylline has been extensively studied with multiple polymorphs discovered, there is still currently no conclusive structure for the metastable theophylline form III. In this present work, by combining more widely used techniques such as X-ray diffraction and thermogravimetric analysis with more emerging techniques like low-frequency Raman and terahertz time-domain spectroscopy, to analyze the structure and dynamics of a crystalline system, it was possible to provide further evidence that the form III structure has a theophylline monohydrate structure with the water molecules removed. Solid-state density functional theory simulations were paramount in proving that this proposed structure is correct and explain how vibrational modes within the crystal structures feature and govern polymorphic transitions and the metastable form III. Through the insight provided by both simulated and experimental results, it was possible to decisively conclude the elusive crystal structure of theophylline form III. It was also shown that the correct space group for theophylline monohydrate is not P21/n but, in fact, Pc.
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Affiliation(s)
- Eduardo Maia Paiva
- Institute of Chemistry, State University of Campinas-Unicamp, Rua Monteiro Lobato, 290, Campinas 13083-862, SP, Brazil
| | - Qi Li
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Adam J Zaczek
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Claudete F Pereira
- Department of Fundamental Chemistry, Federal University of Pernambuco, Avenida Jornalista Aníbal Fernandes, Recife 50740-560, PE, Brazil
| | | | - J Axel Zeitler
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
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29
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Suzuki N, Fukui K, Otaka K, Suzuki T, Fukami T. Monitoring of Cocrystal Dissociation during the Wet Granulation Process in the Presence of Disintegrants by Using Low-Frequency Raman Spectroscopy. Chem Pharm Bull (Tokyo) 2021; 69:877-885. [PMID: 34470952 DOI: 10.1248/cpb.c21-00302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to evaluate the effect of three coformers and five disintegrants in the granulation formulation on the dissociation of cocrystal during the granulation process by monitoring wet granulation with probe-type low-frequency Raman (LF-Raman) spectroscopy. As model cocrystals, paracetamol (APAP)-oxalic acid (OXA), APAP-maleic acid (MLA), and APAP-trimethylglycine (TMG) were used. The monitoring of the granulation recipe containing cocrystals during wet granulation was performed over time with high-performance LF-Raman spectrometry and the dissociation rate was calculated from the results of multivariate analysis of LF-Raman spectra. The dissociation rate decreased in the order of APAP-TMG, APAP-OXA, and APAP-MLA, showing the same order as observed in Powder X-ray diffraction measurements. Furthermore, to compare the effect of disintegrants on the dissociation rate of APAP-OXA, LF-Raman monitoring was performed for the granulation recipes containing five typical disintegrants (two low-substitution hydroxypropyl cellulose (HPC), cornstarch (CSW), carmellose sodium (CMC), and crospovidone (CRP)). The dissociation rate of APAP-OXA decreased in the order of CSW, HPCs, CMC, and CRP. This difference in the dissociation rate of APAP-OXA was thought to be due to the disintegration mechanism of the disintegrants and the water absorption ratio, which was expected to affect the water behavior on the disintegrant surface during wet granulation. These results suggested that probe-type LF-Raman spectroscopy is useful to monitor the dissociation behavior of cocrystals during wet granulation and can compare the relative stability of cocrystal during wet granulation between different formulations.
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Affiliation(s)
- Naoto Suzuki
- Laboratory of Pharmaceutics, School of Pharmacy, Nihon University
| | - Kanako Fukui
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Koki Otaka
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Toyofumi Suzuki
- Laboratory of Pharmaceutics, School of Pharmacy, Nihon University
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
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30
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Be Rziņš KR, Fraser-Miller SJ, Gordon KC. Pseudo-3D Subsurface Imaging of Pharmaceutical Solid Dosage Forms Using Micro-spatially Offset Low-Frequency Raman Spectroscopy. Anal Chem 2021; 93:8986-8993. [PMID: 34142802 DOI: 10.1021/acs.analchem.1c01670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new combinatory Raman subtechnique of low-frequency and micro-spatially offset Raman spectroscopy (denoted micro-SOLFRS) is demonstrated via analysis of pharmaceutical solid dosage forms. A variety of different (multilayer/multicomponent) model systems comprising celecoxib, α-lactose (the anhydrous and monohydrate form), and polyvinylpyrrolidone (PVP) were probed to test the potency of this newly developed technique to, for example, provide qualitative and quantitative information on surface and subsurface layer characteristics, including their thicknesses as well as enable monitoring of surface-driven solid-state form transformations. A simultaneous collection of low- and, the more commonly used, mid-frequency data enabled a direct comparison between these spectral regions, where the low-frequency domain (hence, micro-SOLFRS) proved superior for every respective analysis carried out herein.
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Affiliation(s)
- Ka Rlis Be Rziņš
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Sara J Fraser-Miller
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Keith C Gordon
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
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31
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Robert C, Fraser-Miller SJ, Be Rziņš KR, Okeyo PO, Rantanen J, Rades T, Gordon KC. Monitoring the Isothermal Dehydration of Crystalline Hydrates Using Low-Frequency Raman Spectroscopy. Mol Pharm 2021; 18:1264-1276. [PMID: 33406363 DOI: 10.1021/acs.molpharmaceut.0c01126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Detection of the solid-state forms of pharmaceutical compounds is important from the drug performance point of view. Low-frequency Raman (LFR) spectroscopy has been demonstrated to be very sensitive in detecting the different solid-state forms of pharmaceutically relevant compounds. The potential of LFR spectroscopy to probe the in situ isothermal dehydration was studied using piroxicam monohydrate (PXM) and theophylline monohydrate (TPMH) as the model drugs. The dehydration of PXM and TPMH at four different temperatures (95, 100, 105, and 110 °C and 50, 60, 70, and 80 °C, respectively) was monitored in both the low- (20-300 cm-1) and mid-frequency (335-1800 cm-1) regions of the Raman spectra. Principal component analysis and multivariate curve resolution were applied for the analysis of the Raman data. Spectral differences observed in both regions highlighted the formation of specific anhydrous forms of piroxicam and theophylline from their respective monohydrates. The formation of the anhydrous forms was detected on different timescales (approx. 2 min) between the low and mid-frequency Raman regions. This finding highlights the differing nature of the vibrations being detected between these two spectral regions. Computational simulations performed were also in agreement with the experimental results, and allowed elucidating the origin of different spectral features.
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Affiliation(s)
- Chima Robert
- Dodd Walls Centre for Photonics and Quantum Technologies, University of Otago, 9016 Dunedin, New Zealand
| | - Sara J Fraser-Miller
- Dodd Walls Centre for Photonics and Quantum Technologies, University of Otago, 9016 Dunedin, New Zealand
| | - Ka Rlis Be Rziņš
- Dodd Walls Centre for Photonics and Quantum Technologies, University of Otago, 9016 Dunedin, New Zealand
| | - Peter O Okeyo
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.,The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Ørsted Plads, 2800 Kgs Lyngby, Denmark
| | - Jukka Rantanen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Keith C Gordon
- Dodd Walls Centre for Photonics and Quantum Technologies, University of Otago, 9016 Dunedin, New Zealand
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32
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Bērziņš K, Fraser-Miller SJ, Gordon KC. Recent advances in low-frequency Raman spectroscopy for pharmaceutical applications. Int J Pharm 2021; 592:120034. [DOI: 10.1016/j.ijpharm.2020.120034] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 10/23/2022]
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33
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Latreche M, Willart JF, Paccou L, Guinet Y, Danède F, Hédoux A. Contribution of low-frequency Raman spectroscopy to determine the solubility curves of drugs in polymers: The case of paracetamol/PVP. Eur J Pharm Biopharm 2020; 154:222-227. [DOI: 10.1016/j.ejpb.2020.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
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34
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Ouiyangkul P, Tantishaiyakul V, Hirun N. Exploring potential coformers for oxyresveratrol using principal component analysis. Int J Pharm 2020; 587:119630. [DOI: 10.1016/j.ijpharm.2020.119630] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/25/2020] [Accepted: 07/06/2020] [Indexed: 01/27/2023]
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35
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Molecular state evaluation of active pharmaceutical ingredients in adhesive patches for transdermal drug delivery. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101800] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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36
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Paiva EM, Ribessi RL, Pereira CF, Rohwedder JJR. Low-frequency Raman spectrophotometer with wide laser illumination on the sample: A tool for pharmaceutical analytical analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117798. [PMID: 31813732 DOI: 10.1016/j.saa.2019.117798] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
This work describes an optical configuration for a Raman spectrophotometer, which permits variation of the laser spot size from 3 to 3000 μm, maintaining a high Raman photons throughput and allowing acquisitions with a short integration time. In addition, the instrument can acquire spectra from the low to middle frequency vibrational range (10 to 2000 cm-1), on the Stokes and anti-Stokes sides. One of the features of this new optical configuration is the non-use of beam splitters to redirect the scattered light to the detector, which would sacrifice the laser power. The quantitative and qualitative analytical performances of the Raman spectrophotometer were evaluated using chemometric models to predict the concentrations of different active pharmaceutical ingredients (APIs) in mixtures with polymorphs and excipients, as well as by analysis of an API mixture employing hyperspectral imaging. This new optical configuration was shown to be versatile for pharmaceutical purposes and could be used in applications such as the characterization of new drugs or the quality control of raw materials and processes, using normal Raman measurements or SERS (surface-enhanced Raman scattering).
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Affiliation(s)
- Eduardo Maia Paiva
- Institute of Chemistry, State University of Campinas - Unicamp, Rua Monteiro Lobato, 290, Campinas, SP CEP: 13083-862, Brazil.
| | - Rafael Luis Ribessi
- Institute of Chemistry, State University of Campinas - Unicamp, Rua Monteiro Lobato, 290, Campinas, SP CEP: 13083-862, Brazil
| | - Claudete Fernandes Pereira
- Department of Fundamental Chemistry, Federal University of Pernambuco, Avenida Jornalista Aníbal Fernandes, Recife, PE CEP: 50740-560, Brazil
| | - Jarbas José Rodrigues Rohwedder
- Institute of Chemistry, State University of Campinas - Unicamp, Rua Monteiro Lobato, 290, Campinas, SP CEP: 13083-862, Brazil
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37
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Tian B, Ding Z, Zong S, Yang J, Wang N, Wang T, Huang X, Hao H. Manipulation of Pharmaceutical Polymorphic Transformation Process Using Excipients. Curr Pharm Des 2020; 26:2553-2563. [PMID: 32053064 DOI: 10.2174/1381612826666200213122302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 01/10/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND In the pharmaceutical field, it is vital to ensure a consistent product containing a single solid-state form of the active pharmaceutical ingredient (API) in the drug product. However, some APIs are suffering from the risk of transformation of their target forms during processing, formulation and storage. METHODS The purpose of this review is to summarize the relevant category of excipients and demonstrate the availability and importance of using excipients as a key strategy to manipulate pharmaceutical polymorphic transformation. RESULTS The excipient effects on solvent-mediated phase transformations, solid-state transitions and amorphous crystallization are significant. Common pharmaceutical excipients including amino acids and derivatives, surfactants, and various polymers and their different manipulation effects were summarized and discussed. CONCLUSION Appropriate use of excipients plays a role in manipulating polymorphic transformation process of corresponding APIs, with a promising application of guaranteeing the stability and effectiveness of drug dosage forms.
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Affiliation(s)
- Beiqian Tian
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhiyong Ding
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Shuyi Zong
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jinyue Yang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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38
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Salim M, Fraser-Miller SJ, Be Rziņš KR, Sutton JJ, Ramirez G, Clulow AJ, Hawley A, Beilles S, Gordon KC, Boyd BJ. Low-Frequency Raman Scattering Spectroscopy as an Accessible Approach to Understand Drug Solubilization in Milk-Based Formulations during Digestion. Mol Pharm 2020; 17:885-899. [PMID: 32011151 PMCID: PMC7054896 DOI: 10.1021/acs.molpharmaceut.9b01149] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Techniques enabling in situ monitoring of drug solubilization and changes in the solid-state of the drug during the digestion of milk and milk-based formulations are valuable for predicting the effectiveness of such formulations in improving the oral bioavailability of poorly water-soluble drugs. We have recently reported the use of low-frequency Raman scattering spectroscopy (region of analysis <200 cm-1) as an analytical approach to probe solubilization of drugs during digestion in milk using ferroquine (SSR97193) as the model compound. This study investigates the wider utilization of this technique to probe the solubilization behavior of other poorly water-soluble drugs (halofantrine, lumefantrine, and clofazimine) in not only milk but also infant formula in the absence or presence of bile salts during in vitro digestion. Multivariate analysis was used to interpret changes to the spectra related to the drug as a function of digestion time, through tracking changes in the principal component (PC) values characteristic to the drug signals. Characteristic low-frequency Raman bands for all of the drugs were evident after dispersing the solid drugs in suspension form in milk and infant formula. The drugs were generally solubilized during the digestion of the formulations as observed previously for ferroquine and correlated with behavior determined using small-angle X-ray scattering (SAXS). A greater extent of drug solubilization was also generally observed in the infant formula compared to milk. However, in the case of the drug clofazimine, the correlation between low-frequency Raman scattering and SAXS was not clear, which may arise due to background interference from clofazimine being an intense red dye, which highlights a potential limitation of this new approach. Overall, the in situ monitoring of drug solubilization in milk and milk-based formulations during digestion can be achieved using low-frequency Raman scattering spectroscopy, and the information obtained from studying this spectral region can provide better insights into drug solubilization compared to the mid-frequency Raman region.
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Affiliation(s)
- Malinda Salim
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Sara J Fraser-Miller
- Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Ka Rlis Be Rziņš
- Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Joshua J Sutton
- Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Gisela Ramirez
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Andrew J Clulow
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Adrian Hawley
- SAXS/WAXS Beamline, Australian Synchrotron, ANSTO, 800 Blackburn Rd, Clayton, Victoria 3169, Australia
| | | | - Keith C Gordon
- Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Victoria 3052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Victoria 3052, Australia
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39
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Hisada H, Okayama A, Hoshino T, Carriere J, Koide T, Yamamoto Y, Fukami T. Determining the Distribution of Active Pharmaceutical Ingredients in Combination Tablets Using Near IR and Low-Frequency Raman Spectroscopy Imaging. Chem Pharm Bull (Tokyo) 2020; 68:155-160. [DOI: 10.1248/cpb.c19-00791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiroshi Hisada
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Akira Okayama
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | - Takuya Hoshino
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
| | | | - Tatsuo Koide
- Division of Drugs, National Institute of Health Sciences
| | | | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University
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40
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Wang Y, Zhang N, Hou B, Yin Q, Gong J, Tang W. Effect of crystal growth kinetics on the formation of liquid inclusions in tetramethylpyrazine crystals. CrystEngComm 2020. [DOI: 10.1039/c9ce01965k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inclusion of mother liquids inside the pharmaceutical crystals poses a great challenge and threat to the product quality and purification efficiency. Herein we demonstrate how growth kinetics tune the formation of liquid inclusion and its occluded mechanism.
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Affiliation(s)
- Yaoguo Wang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Nuoyang Zhang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Baohong Hou
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Qiuxiang Yin
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Junbo Gong
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Weiwei Tang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- People's Republic of China
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41
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Kleist EM, Korter TM. Quantitative Analysis of Minium and Vermilion Mixtures Using Low-Frequency Vibrational Spectroscopy. Anal Chem 2019; 92:1211-1218. [DOI: 10.1021/acs.analchem.9b04348] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Elyse M. Kleist
- Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Timothy M. Korter
- Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, New York 13244-4100, United States
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42
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Prakash O, Singh RK. Probing self-associated intermolecular H-bonding using low-frequency SERS coupled with mid-IR SERS and DFT study: a case study of 2-MBA adsorbed on ZnO nanoparticles. Phys Chem Chem Phys 2019; 21:21431-21437. [PMID: 31531501 DOI: 10.1039/c9cp03124c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In the present study, low-frequency SERS is reported for the first time to investigate intermolecular interactions. Low-frequency SERS in the THz region (>50 cm-1) and the mid-IR region is used to probe the H-bonding interaction in 2-mercaptobenzoic acid (2-MBA) molecules adsorbed on the surface of ZnO nanoparticles. The self-association due to H-bonding leads to dimer formation of 2-MBA through carboxylic acid groups. The characteristic Raman bands of the 2-MBA dimer, H-bonded O-H stretching and out-of-plane O-H bending modes, are observed. Subsequently, this dimer formation causes the evolution of two new low-frequency modes at 90 cm-1 (shear dimer in-plane bending) and 110 cm-1 (shear dimer stretching) of intermolecular H-bonding and a blue-shift of the torsional mode of (-COOH) + (-SH). In the THz region (50-200 cm-1) the vibrational modes are blue-shifted, while in the mid-IR region the symmetric out-of-plane O-H bending is red-shifted. The present work shows that SERS can be used to study intermolecular H-bonding of molecules at very low concentrations.
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Affiliation(s)
- Om Prakash
- Department of Physics, Banaras Hindu University, Varanasi-221005, India.
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43
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Preparation and physicochemical characterization of rotigotine drug-in-adhesive patch containing crystal growth inhibitor. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Xu S, Bruce Chase D, Rabolt JF, Noda I. Two-Dimensional Correlation Spectroscopy (2D-COS) Studies of Solution Mixtures in the Low Frequency Raman Region. APPLIED SPECTROSCOPY 2019; 73:1012-1018. [PMID: 31008652 DOI: 10.1177/0003702819848501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Raman spectra of a series of binary solution mixtures, including chloroform (CHCl3), ethanol (EtOH), and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP), were analyzed using the two-dimensional correlation spectroscopic (2D-COS) technique in the low frequency region. Numerous asynchronous cross-peaks ubiquitously appeared in the concentration-dependent Raman spectra of these organic solvent mixtures. The result clearly demonstrated a deviation from ideal solution behavior, reflecting the presence of specific molecular interactions causing a subtle nonlinear spectral intensity response of Raman bands to the concentration changes. Furthermore, the combination of 2D-COS and low frequency Raman spectroscopy was extended to poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate] (PHBHx) copolymer solutions in CHCl3-HFIP co-solvents. The results suggest the existence of hydrogen bonding interaction between the PHBHx and HFIP, which is consistent with the previous infrared spectroscopic study of PHBHx solutions.
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Affiliation(s)
- Shuyu Xu
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA
| | - D Bruce Chase
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA
| | - John F Rabolt
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA
| | - Isao Noda
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA
- Danimer Scientific, Bainbridge, GA, USA
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Latreche M, Willart JF, Paccou L, Guinet Y, Hédoux A. Polymorphism versus devitrification mechanism: Low-wavenumber Raman investigations in sulindac. Int J Pharm 2019; 567:118476. [DOI: 10.1016/j.ijpharm.2019.118476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 12/01/2022]
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46
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Be̅rziņš K, Fraser-Miller SJ, Rades T, Gordon KC. Low-Frequency Raman Spectroscopic Study on Compression-Induced Destabilization in Melt-Quenched Amorphous Celecoxib. Mol Pharm 2019; 16:3678-3686. [DOI: 10.1021/acs.molpharmaceut.9b00557] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ka̅rlis Be̅rziņš
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Sara J. Fraser-Miller
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
| | - Thomas Rades
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 1165, Denmark
- Faculty of Science and Engineering, Åbo Akademi University, Turku 20500, Finland
| | - Keith C. Gordon
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9016, New Zealand
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47
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Yamamoto S, Ohnishi E, Sato H, Hoshina H, Ishikawa D, Ozaki Y. Low-Frequency Vibrational Modes of Nylon 6 Studied by Using Infrared and Raman Spectroscopies and Density Functional Theory Calculations. J Phys Chem B 2019; 123:5368-5376. [DOI: 10.1021/acs.jpcb.9b04347] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shigeki Yamamoto
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Erika Ohnishi
- School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Harumi Sato
- Graduate School of Human Development and Environment, Kobe University, Higashinada-Ku, Kobe, Hyogo 657-8501, Japan
| | - Hiromichi Hoshina
- RIKEN Center for Advanced Photonics, Aramaki-Aoba,
Aoba-ku, Sendai, Miyagi 980-0845, Japan
| | - Daitaro Ishikawa
- Faculty of Food and Agricultural Sciences, Fukushima University, 1 Kanayagawa, Fukushima 960-1296, Japan
| | - Yukihiro Ozaki
- School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
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48
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Salim M, Fraser-Miller SJ, Sutton JJ, Be̅rziņš K, Hawley A, Clulow AJ, Beilles S, Gordon KC, Boyd BJ. Application of Low-Frequency Raman Scattering Spectroscopy to Probe in Situ Drug Solubilization in Milk during Digestion. J Phys Chem Lett 2019; 10:2258-2263. [PMID: 31013099 PMCID: PMC6503463 DOI: 10.1021/acs.jpclett.9b00654] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We have recently shown that real-time monitoring of drug solubilization and changes to solid state of the drug during digestion of milk can be achieved using synchrotron small-angle X-ray scattering. A complementary laboratory-based method to explore such changes is low-frequency Raman spectroscopy, which has been increasingly used to characterize crystalline drugs and their polymorphs in powders and suspensions. This study investigates the use of this technique to monitor in situ drug solubilization in milk during the process of digestion, using a lipolysis model/flow-through configuration identical to that used previously for in situ synchrotron small-angle X-ray scattering studies. An antimalarial drug, ferroquine (SSR97193), was used as the model drug for this study. The Raman spectra were processed using multivariate analysis to extract the drug signals from the milk digestion background. The results showed disappearance of the ferroquine peaks in the low-frequency Raman region (<200 cm-1) after approximately 15-20 min of digestion when milk fat was present in the system, which indicated drug solubilization and was in good agreement with the in situ small-angle X-ray scattering measurements. This proof-of-concept study therefore suggests that low-frequency Raman spectroscopy can be used to monitor drug solubilization in a complex digesting milk medium because of the unique vibrational modes of the drug crystal lattices.
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Affiliation(s)
- Malinda Salim
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Sara J. Fraser-Miller
- Dodd-Walls
Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Joshua J. Sutton
- Dodd-Walls
Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Ka̅rlis Be̅rziņš
- Dodd-Walls
Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Adrian Hawley
- SAXS/WAXS
Beamline, Australian Synchrotron, ANSTO, 800 Blackburn Road, Clayton, VIC 3169, Australia
| | - Andrew J. Clulow
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Stéphane Beilles
- Sanofi, 371, Rue du Pr. Blayac, 34181 Montpellier cedex04, France
| | - Keith C. Gordon
- Dodd-Walls
Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Ben J. Boyd
- Drug
Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical
Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia
- Monash
Institute of Pharmaceutical
Sciences, Monash University (Parkville Campus), 381 Royal Parade,
Parkville, VIC 3052, Australia. Tel.: +61 3 99039112. Fax: +61 3 99039583. E-mail:
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49
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Multiple conformations and supramolecular synthons in almost fifty crystal structures of the anti-HIV/HBV drug lamivudine. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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50
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Inoue M, Hisada H, Koide T, Fukami T, Roy A, Carriere J, Heyler R. Transmission Low-Frequency Raman Spectroscopy for Quantification of Crystalline Polymorphs in Pharmaceutical Tablets. Anal Chem 2019; 91:1997-2003. [PMID: 30606009 DOI: 10.1021/acs.analchem.8b04365] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The purpose of this study was to quantify polymorphs of active pharmaceutical ingredients in pharmaceutical tablets using a novel transmission low-frequency Raman spectroscopy method. We developed a novel transmission geometry for low-frequency Raman spectroscopy and compared quantitative ability in transmission mode versus backscattering mode using chemometrics. We prepared two series of tablets, (1) containing different weight-based contents of carbamazepine form III and (2) including different ratios of carbamazepine polymorphs (forms I/III). From the relationship between the contents of carbamazepine form III and partial least-squares (PLS) predictions in the tablets, correlation coefficients in transmission mode ( R2 = 0.98) were found to be higher than in backscattering mode ( R2 = 0.97). The root-mean-square error of cross-validation (RMSECV) of the transmission mode was 3.9 compared to 4.9 for the backscattering mode. The tablets containing a mixture of carbamazepine (I/III) polymorphs were measured by transmission low-frequency Raman spectroscopy, and it was found that the spectral shape changed according to the ratio of polymorphs: the relationship between the actual content and the prediction showed high correlation. These findings indicate that transmission low-frequency Raman spectroscopy possesses the potential to complement existing analytical methods for the quantification of polymorphs.
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Affiliation(s)
- Motoki Inoue
- Department of Molecular Pharmaceutics , Meiji Pharmaceutical University , 2-522-1, Noshio , Kiyose , Tokyo 204-8588 , Japan
| | - Hiroshi Hisada
- Department of Molecular Pharmaceutics , Meiji Pharmaceutical University , 2-522-1, Noshio , Kiyose , Tokyo 204-8588 , Japan
| | - Tatsuo Koide
- Division of Drugs , National Institute of Health Sciences , 3-25-26, Tonomachi , Kawasaki-ku, Kawasaki , Kanagawa 210-9501 , Japan
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics , Meiji Pharmaceutical University , 2-522-1, Noshio , Kiyose , Tokyo 204-8588 , Japan
| | - Anjan Roy
- Ondax Incorporated , 850 East Duarte Road , Monrovia , California 91016 , United States
| | - James Carriere
- Ondax Incorporated , 850 East Duarte Road , Monrovia , California 91016 , United States
| | - Randy Heyler
- Ondax Incorporated , 850 East Duarte Road , Monrovia , California 91016 , United States
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