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Shallan AI, Abdel-Hakim A, Hammad MA, Abou El-Alamin MM. Spectrofluorimetric determination of selected genotoxic impurities in pharmaceutical raw materials and final products. Sci Rep 2022; 12:15319. [PMID: 36097190 PMCID: PMC9467988 DOI: 10.1038/s41598-022-19603-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/31/2022] [Indexed: 11/09/2022] Open
Abstract
A green spectrofluorimetric method was introduced for the determination of selected genotoxic impurities; 2-aminopyridine and 3-aminopyridine in different pharmaceutical raw materials and dosage forms. The method relied on the native fluorescence of these impurities in acidic medium. The experimental conditions were carefully studied and optimized, and the method was validated according to International Council on Harmonisation (ICH) guidelines. The linear range for both analytes was 2.50–100 ng/mL with good determination coefficients of 0.9995 and 0.9992 and detection limits of 0.62 ng/mL and 0.74 ng/mL for 2-aminopyridine and 3-aminopyridine, respectively. The method was successfully applied for determination of 2-aminopyridine and 3-aminopyridine in four active pharmaceutical ingredients and nine dosage forms with satisfactory percentage recoveries and without interference from co-formulated excipients. Analytical performance of the proposed method was comparable to that of the reported methods; hence, the proposed method can be used as a simple and low-cost alternative in quality control laboratories.
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Affiliation(s)
- Aliaa I Shallan
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Helwan University, Cairo, 11795, Egypt
| | - Ali Abdel-Hakim
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt.
| | - Mohamed A Hammad
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt
| | - Maha M Abou El-Alamin
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Helwan University, Cairo, 11795, Egypt.
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2
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Maar S, Damm C, Peukert W. Wet nanomilling of naproxen using a novel stabilization mechanism via zirconium complexation. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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3
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Wahba MEK, El Sherbiny D. Applicability of hybrid micelle liquid chromatography for practical determination of acid dissociation constant. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2022. [DOI: 10.1080/16583655.2022.2031569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M. E. K. Wahba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - D. El Sherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Çelebİer M, Nennİ M, Kaplan O, Akgeyİk E, Kaynak MS, Şahİn S. Determination of the Physicochemical Properties of Piroxicam. Turk J Pharm Sci 2020; 17:535-541. [PMID: 33177935 DOI: 10.4274/tjps.galenos.2019.82335] [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: 02/25/2019] [Accepted: 09/05/2019] [Indexed: 12/01/2022]
Abstract
Objectives The aim of this study was to determine the acid dissociation constant (pKa) of piroxicam using high performance liquid chromatography (HPLC) and ultraviolet-visible (UV-Vis) spectrophotometry, and to determine the partition coefficient (Log P), distribution coefficient (Log D), and "Log kw" values of piroxicam using HPLC. Materials and Methods The HPLC studies were performed on a reversed-phase ACE C18 (150x4.6 mm ID, 5 μm) column at a flow rate of 1.0 mL min-1. The detector was set to 360 nm. Log D at different pH values (3.0-6.5) was examined with a phosphate buffer (20 mM) and acetonitrile (30:70 v/v) mixture as the mobile phase. For pKa determination, HPLC studies were performed with a mixture of phosphate buffer (20 mM) and methanol within the pH range of 3.50-6.00. Log kw measurements were performed with phosphate buffer (20 mM) and MeOH (from 20:80 v/v to 10:90 v/v) mixtures within the pH range of 3.50-6.00. UV-Vis spectrophotometric pKa measurements were performed at 285 nm wavelength. Results The pKa value of piroxicam was found to be 5.3 by HPLC and 5.7 by UV-Vis spectrophotometry. Log P of piroxicam was determined as 1.58 in our experimental conditions. Log D values were 1.57, 1.57, 1.44, 1.13, and 0.46 for pH values of 3.17, 3.79, 4.44, 5.42, and 6.56, respectively. Conclusion In the literature, different Log P (3.1, 2.2, and 0.6) and pKa (6.3 and 4.8) values were reported for piroxicam. The Log P (1.58) and pKa (5.3 and 5.7) values obtained for piroxicam in our study were within the range of the literature values. All these results indicate that different experimental approaches used for the determination of physicochemical properties could provide different values. Although UV spectrophotometry is easy to apply, HPLC is a unique technique for simultaneous determination of pKa, Log D, and Log P values of compounds.
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Affiliation(s)
- Mustafa Çelebİer
- Hacettepe University Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey
| | - Merve Nennİ
- Çukurova University Faculty of Pharmacy, Department of Analytical Chemistry, Adana, Turkey
| | - Ozan Kaplan
- Hacettepe University Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey
| | - Emrah Akgeyİk
- İnönü University Faculty of Pharmacy, Department of Analytical Chemistry, Malatya, Turkey
| | - Mustafa Sinan Kaynak
- Anadolu University Yunus Emre Vocational School, Department of Pharmacy, Program in Pharmacy Services, Eskişehir, Turkey
| | - Selma Şahİn
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara, Turkey
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Design, synthesis, evaluation, and molecular dynamic simulation of triclosan mimic diphenyl ether derivatives as antitubercular and antibacterial agents. Struct Chem 2020. [DOI: 10.1007/s11224-019-01478-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Khade AB, Eshwara VK, Boshoff HI, Arora K, Tiwari A, Bhat P, Tiwari M, Shenoy GG. Design, Synthesis, Biological Evaluation and Molecular Dynamic Simulation Studies of Diphenyl Ether Derivatives as Antitubercular and Antibacterial Agents. ChemistrySelect 2020. [DOI: 10.1002/slct.201903305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Amol B. Khade
- Department of Pharmaceutical ChemistryManipal College of Pharmaceutical SciencesManipal Academy of Higher Education Manipal- 576104 India
| | - Vandana K. Eshwara
- Department of MicrobiologyKasturba Medical College; Manipal Academy of Higher Education Manipal- 576104
| | - Helena I.M. Boshoff
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious DiseasesNational Institutes of Health, Bethesda Maryland 20892 United States
| | - Kriti Arora
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious DiseasesNational Institutes of Health, Bethesda Maryland 20892 United States
| | - Ashutosh Tiwari
- Department of Pharmaceutical ChemistryManipal College of Pharmaceutical SciencesManipal Academy of Higher Education Manipal- 576104 India
| | - Pritesh Bhat
- Department of Pharmaceutical ChemistryManipal College of Pharmaceutical SciencesManipal Academy of Higher Education Manipal- 576104 India
| | - Mradul Tiwari
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal Academy of Higher Education Manipal- 576104 India
| | - G. Gautham Shenoy
- Department of Pharmaceutical ChemistryManipal College of Pharmaceutical SciencesManipal Academy of Higher Education Manipal- 576104 India
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Feehan JF, Monaghan J, Gill CG, Krogh ET. Direct Measurement of Acid Dissociation Constants of Trace Organic Compounds at Nanomolar Levels in Aqueous Solution by Condensed Phase-Membrane Introduction Mass Spectrometry. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:1879-1889. [PMID: 31211442 DOI: 10.1002/etc.4519] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/28/2019] [Accepted: 06/12/2019] [Indexed: 06/09/2023]
Abstract
We report the use of condensed phase-membrane introduction mass spectrometry as a novel method for the determination of acid dissociation constants for hydrophobic organic acids in aqueous solution at nanomolar concentrations. The technique is based on the pH-dependent permeation of analytes through a semipermeable polydimethylsiloxane membrane probe that is immersed directly in aqueous samples. We describe the method and report the dissociation constant (pKa ) values for compounds of biological and environmental relevance, including contaminants, pharmaceuticals, and naphthenic acids. The approach can be applied to individual compounds, combined suites, and complex mixtures at parts-per-billion levels. We report pKa values for 10 carboxylic acids with precision estimates and relative errors (where reliable literature values are available) of <0.1 log units. We report acidity constants for 2-methyl-3-methoxy-4-phenyl butanoic acid (a biomarker for microcystin algal toxins) and 4-t-butylcyclohexane carboxylic acid (a model naphthenic acid) as 4.28 ± 0.03 and 5.15 ± 0.05, respectively. Furthermore, we employ this approach to measure the effect of both temperature and deuterium oxide (heavy water) on acid dissociation, reporting the enthalpy and entropy changes for the ionization of a representative carboxylic acid and substituted phenol. Environ Toxicol Chem 2019;38:1879-1889. © 2019 SETAC.
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Affiliation(s)
- Jackelyn F Feehan
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, British Columbia, Canada
| | - Joseph Monaghan
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, British Columbia, Canada
| | - Chris G Gill
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, British Columbia, Canada
- Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada
| | - Erik T Krogh
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, Nanaimo, British Columbia, Canada
- Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada
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Nakov N, Acevska J, Brezovska K, Dimitrovska A. Overview on chromatographic and potentiometric based approaches for pKa determination of sparingly soluble substances. MAKEDONSKO FARMACEVTSKI BILTEN 2018. [DOI: 10.33320/maced.pharm.bull.2017.63.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The dissociation constant (pKa) is one of the most important physicochemical property of the compounds and it is of great importance for the pharmaceutical industry. Many of the active pharmaceutical ingredients are sparingly soluble in water or have no chromophore, thus the conventional UV/Vis spectrometry and potentiometry methods are not applicable. This article presents an overview of several approaches based on RP-HPLC and cosolvent/surfactant potentiometry that have been recently published for the pKa determination of sparingly soluble active pharmaceutical ingredients. Additionally, different calculation methods that have been used for the estimation of the aqueous dissociation constant are summarized.
Keywords: dissociation constant, pKa, sparingly soluble substances, determination, reverse-phase liquid chromatography, potentiometry, surfactants
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Affiliation(s)
- Natalija Nakov
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Ss. Cyril and Methodius University, 1000 Skopje, Republic of Macedonia
| | - Jelena Acevska
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Ss. Cyril and Methodius University, 1000 Skopje, Republic of Macedonia
| | - Katerina Brezovska
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Ss. Cyril and Methodius University, 1000 Skopje, Republic of Macedonia
| | - Aneta Dimitrovska
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Ss. Cyril and Methodius University, 1000 Skopje, Republic of Macedonia
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Yu Q, Wu X, Zhu Q, Wu W, Chen Z, Li Y, Lu Y. Enhanced transdermal delivery of meloxicam by nanocrystals: Preparation, in vitro and in vivo evaluation. Asian J Pharm Sci 2017; 13:518-526. [PMID: 32104426 PMCID: PMC7032118 DOI: 10.1016/j.ajps.2017.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/05/2017] [Accepted: 10/10/2017] [Indexed: 11/09/2022] Open
Abstract
Meloxicam (MLX) is efficient in relieving pain and inflammatory symptoms, which, however, is limited by the poor solubility and gastrointestinal side effects. The objective of this study is to develop a nanocrystal formulation to enhance transdermal delivery of MLX. MLX nanocrystals were successfully prepared by the nanoprecipitation technique based on acid-base neutralization. With poloxamer 407 and Tween 80 (80/20, w/w) as mixed stabilizers, MLX nanocrystals with particle size of 175 nm were obtained. The crystalline structure of MLX nanocrystals was confirmed by both differential scanning calorimetry and X-ray powder diffractometry. However, the nanoprecipitation process reduced the crystallinity of MLX. Nanocrystals increased both in vitro and in vivo transdermal permeation of MLX compared with the solution and suspension counterparts. Due to the enhanced apparent solubility and dissolution as well as the facilitated hair follicular penetration, nanocrystals present a high and prolonged plasma MLX concentration. And 2.58- and 4.4-fold increase in AUC0→24h was achieved by nanocrystals comparing with solution and suspension, respectively. In conclusion, nanocrystal is advantageous for transdermal delivery of MLX.
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Affiliation(s)
- Qin Yu
- Shanghai Dermatology Hospital, Shanghai 200443, China
| | - Xiying Wu
- Shanghai Dermatology Hospital, Shanghai 200443, China
| | - Quangang Zhu
- Shanghai Dermatology Hospital, Shanghai 200443, China
| | - Wei Wu
- Shanghai Dermatology Hospital, Shanghai 200443, China.,Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai 201203, China
| | | | - Ye Li
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710003, China
| | - Yi Lu
- Shanghai Dermatology Hospital, Shanghai 200443, China.,Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai 201203, China
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Talay A, Demiralay EÇ, Doğan Daldal Y, Üstün Z. Investigation of thermodynamic acidity constants of some statins with RPLC method. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.04.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Demiralay EÇ, Üstün Z, Daldal YD. Estimation of thermodynamic acidity constants of some penicillinase-resistant penicillins. J Pharm Biomed Anal 2014; 91:7-11. [DOI: 10.1016/j.jpba.2013.12.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/09/2013] [Accepted: 12/10/2013] [Indexed: 10/25/2022]
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Çubuk Demiralay E, Koç D, Daldal YD, Alsancak G, Ozkan SA. Determination of chromatographic dissociation constants of some carbapenem group antibiotics and quantification of these compounds in human urine. Biomed Chromatogr 2013; 28:660-6. [DOI: 10.1002/bmc.3085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 09/23/2013] [Accepted: 10/15/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Ebru Çubuk Demiralay
- Department of Chemistry, Faculty of Science and Literature; Süleyman Demirel University; 32260 Isparta Turkey
| | - Duygu Koç
- Department of Chemistry, Faculty of Science and Literature; Süleyman Demirel University; 32260 Isparta Turkey
| | - Y. Doğan Daldal
- Department of Chemistry, Faculty of Science and Literature; Süleyman Demirel University; 32260 Isparta Turkey
| | - Güleren Alsancak
- Department of Chemistry, Faculty of Science and Literature; Süleyman Demirel University; 32260 Isparta Turkey
| | - Sibel A. Ozkan
- Department of Analytical Chemistry, Faculty of Pharmacy; Ankara University; 06100 Tandogan Ankara Turkey
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Huo H, Li T, Zhang L. pKa determination of oxysophocarpine by reversed - phase high performance liquid chromatography. SPRINGERPLUS 2013; 2:270. [PMID: 23853749 PMCID: PMC3701144 DOI: 10.1186/2193-1801-2-270] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 05/24/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND In this study, a RP - HPLC method was applied for determination of pKa value by using the dependence of the capacity factor (k) on the pH of the mobile phase for oxysophocarpine (OSP). FINDINGS The effect of the mobile phase composition on the ionization constant was studied by measuring the pKa value at different MeOH concentrations, ranging from 10 to 20% (v/v). Based on all pH - k curves plotted and pH values at inflection point calculated, experimental pKa value obtained for oxysophocarpine was 6.5. CONCLUSION This method was successfully applied to realize low sample consumption, rapid sample throughput, high sensitivity and precision.
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Affiliation(s)
- Huiling Huo
- College of Chinese Traditional Medicine, Guangzhou University of Traditional Chinese Medicine, 232 East of Waihuan Road, University Town, Guangzhou, Guangdong 510006 R.P. China ; College of Chinese Traditional Medicine, Southern Medical University, Guangzhou, Guangdong 510515 R.P. China
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Demiralay EÇ, Koç D, Daldal YD, Çakır C. Determination of chromatographic and spectrophotometric dissociation constants of some beta lactam antibiotics. J Pharm Biomed Anal 2012; 71:139-43. [DOI: 10.1016/j.jpba.2012.06.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 06/15/2012] [Accepted: 06/17/2012] [Indexed: 10/28/2022]
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Karadas N, Sanli S, Gumustas M, Ozkan SA. Voltammetric and RP-LC assay for determination of benidipine HCl. J Pharm Biomed Anal 2012; 66:116-25. [DOI: 10.1016/j.jpba.2012.03.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 03/13/2012] [Accepted: 03/14/2012] [Indexed: 11/28/2022]
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Secilmis-Canbay H, Cubuk-Demiralay E, Alsancak G, Ozkan SA. The Combined Effect of the Organic Modifier Content and pH of the Mobile Phase on the Chromatographic Behavior of Some Arylpropionic and Arylacetic Acids to Optimize Their Liquid Chromatographic Determinations. Chromatographia 2012. [DOI: 10.1007/s10337-012-2255-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Simultaneous Estimation of Ceftazidime and Ceftizoxime in Pharmaceutical Formulations by HPLC Method. Chromatographia 2011. [DOI: 10.1007/s10337-011-2116-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Determination of pK a Values of Cefdinir and Cefixime by LC and Spectrophotometric Methods and Their Analysis in Pharmaceutical Dosage Forms. Chromatographia 2011. [DOI: 10.1007/s10337-011-2013-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Demiralay EC, Cubuk B, Ozkan SA, Alsancak G. Combined effect of polarity and pH on the chromatographic behavior of some angiotensin II receptor antagonists and optimization of their determination in pharmaceutical dosage forms. J Pharm Biomed Anal 2010; 53:475-82. [DOI: 10.1016/j.jpba.2010.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 05/19/2010] [Accepted: 05/21/2010] [Indexed: 11/27/2022]
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Ho J, Coote ML, Franco-Pérez M, Gómez-Balderas R. First-Principles Prediction of the pKas of Anti-inflammatory Oxicams. J Phys Chem A 2010; 114:11992-2003. [DOI: 10.1021/jp107890p] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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