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Háková M, Modebelu U, Erben J, Matysová L, Šatínský D, Švec F, Sklenářová H. Comparative study of drug release from electrospun nanofibers loaded with clotrimazole via two different approaches using a fully automated sequential injection system. Talanta 2024; 269:125415. [PMID: 38006728 DOI: 10.1016/j.talanta.2023.125415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/27/2023]
Abstract
The development of new drug delivery platforms including the use of nanotechnology has been found of great interest in recent years. Two different loading approaches of the model antimycotic drug clotrimazole into the nanofibrous polycaprolactone and polydioxanone structures including electrospinning of a drug-polymer blend and impregnation of nanofibers with drug have been tested. The final amount of clotrimazole in the nanofibrous materials was determined by HPLC analysis and Raman spectroscopy. The electrospinning of blend approach allowed the adsorption of clotrimazole in a quantity of up to 30 % using mixtures with polymer/clotrimazole ratios from 2:1 to 8:1 (w/w). Ethanolic clotrimazole solutions with concentrations from 2.5 to 3.5 mg L-1 were used for adsorbing clotrimazole in blank nanofibers for 1-3 h with final clotrimazole content ranging from 3.0 to 5.7 %. Furthermore, a comparative liberation study including comparison with commercially available creams was carried out in low pressure flow system. The results obtained confirmed well controlled release of clotrimazole from both types of nanofibers. Compared to commercial pharmaceutical formulations containing 1 % clotrimazole where first-order release kinetics was observed, nanofibrous materials provided linear controlled release (zero-order kinetics) in the tested 3 h period.
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Affiliation(s)
- Martina Háková
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Ukamaka Modebelu
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic; Faculty of Drug Sciences, University of Milan, Via Festa Del Perdono 7, 20122 Milano Italy
| | - Jakub Erben
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech Republic
| | - Ludmila Matysová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Dalibor Šatínský
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - František Švec
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Hana Sklenářová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Ogadah CU, Mrštná K, Matysová L, Müllertz A, Rades T, Niederquell A, Šklubalová Z, Vraníková B. Comparison of the liquisolid technique and co-milling for loading of a poorly soluble drug in inorganic porous excipients. Int J Pharm 2024; 650:123702. [PMID: 38086492 DOI: 10.1016/j.ijpharm.2023.123702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/07/2023] [Accepted: 12/09/2023] [Indexed: 12/18/2023]
Abstract
Drug loading into mesoporous carriers may help to improve the dissolution of poorly aqueous-soluble drugs. However, both preparation method and carrier properties influence loading efficiency and drug release. Accordingly, this study aimed to compare two preparation methods: formulation into liquisolid systems (LSS) and co-milling for their efficiency in loading the poorly soluble model drug cyclosporine A (CyA) into mesoporous magnesium aluminometasilicate Neusilin® US2 (NEU) or functionalized calcium carbonate (FCC). Scanning electron microscopy was used to visualize the morphology of the samples and evaluate the changes that occurred during the drug loading process. The solid-state characteristics and physical stability of the formulations, prepared at different drug concentrations, were determined using X-ray powder diffraction. In vitro release of the drug was evaluated in biorelevant media simulating intestinal fluid. The obtained results revealed improved drug release profiles of the formulations when compared to the milled (amorphous) CyA alone. The dissolution of CyA from LSS was faster in comparison to the co-milled formulations. Higher drug release was achieved from NEU than FCC formulations presumably due to the higher pore volume and larger surface area of NEU.
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Affiliation(s)
- Chiazor Ugo Ogadah
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Kristýna Mrštná
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic; Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic.
| | - Ludmila Matysová
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Anette Müllertz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen, Denmark.
| | - Thomas Rades
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen, Denmark.
| | - Andreas Niederquell
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic; Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Klingelbergstr. 50, 4056 Basel, Switzerland.
| | - Zdenka Šklubalová
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Barbora Vraníková
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Mrštná K, Matoušová K, Krčmová LK, Carazo A, Pourová J, Mladěnka P, Matysová L, Švec F. Analysis of vitamin K 1 and major K 2 variants in rat/human serum and lipoprotein fractions by a rapid, simple, and sensitive UHPLC-MS/MS method. J Chromatogr A 2024; 1714:464548. [PMID: 38043166 DOI: 10.1016/j.chroma.2023.464548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
Determination of the various forms of vitamin K, which are involved in coagulation and other physiological processes in humans, is challenging and no standardized method is yet available. Therefore, a reliable and practical method was developed to quantify vitamin K levels in serum and additionally in lipoprotein fractions to clarify its distribution. The LC-MS/MS method for the determination of vitamin K1 and the three main isoforms of vitamin K2 (MK-4, MK-7, MK-9) was combined with a gradient ultracentrifugation technique to allow the separation of lipoprotein fractions. The chromatographic separation was carried out on a Kinetex™ C18 column using a mobile phase consisting mainly of methanol. The target analytes were detected by electrospray ionization mass spectrometry. The separation of all four substances was achieved after a simple sample preparation technique based on miniaturized liquid-liquid extraction. Our method of only 8.5 min revealed the levels of the major forms of vitamin K in 59 human and 12 rat sera and confirmed our hypothesis that vitamin K is primarily (about 50 %) found in the high-density lipoprotein fraction. The median concentrations of vitamin K1, MK-4, MK-7, and MK-9 were found to be 1.19, 2.98, 0.43, and < 0.71 nmol/L in human serum and 1.74, 6.75, less than 0.2, and less than 0.5 nmol/L in rat serum, respectively.
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Affiliation(s)
- Kristýna Mrštná
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Kateřina Matoušová
- The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Lenka Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic.
| | - Alejandro Carazo
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Jana Pourová
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Přemysl Mladěnka
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Ludmila Matysová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - František Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
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Mrštná K, Matoušová K, Matouš P, Matysová L, Švec F, Šnejdrová E, Krčmová LK. Analysis of terbinafine in PLGA-based drug delivery systems by a fast and sensitive UHPLC-DAD method. Anal Methods 2023; 15:2823-2832. [PMID: 37191172 DOI: 10.1039/d3ay00506b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A novel ultra-high performance chromatography method with multichannel detection that allows fast, sensitive, and robust analysis of an antifungal drug terbinafine and its three main impurities β-terbinafine, (Z)-terbinafine, and 4-methylterbinafine in just 5.0 min has been developed. Analysis of terbinafine is important in pharmaceutical analysis since it enables the detection of its impurities at very low concentrations. In this study, we focused on the development, optimization, and validation of the UHPLC method as well as its subsequent application in the evaluation of terbinafine and its three main impurities in the dissolution medium to reveal the incorporation of terbinafine in two poly(lactic-co-glycolic acid) (PLGA) carriers and testing of the drug release at pH 5.5. PLGA based drug delivery systems such as solid dispersions, thin films, microparticles, and nanoparticles are new favorable ways of terbinafine administration. PLGA features excellent tissue compatibility, biodegradation, and adjustable drug release profile. Our pre-formulation study indicates that poly(acrylic acid) branched PLGA polyester has more suitable properties than tripentaerythritol branched PLGA polyester. Therefore, the former is likely to enable design of a new drug delivery system for topically applied terbinafine that could facilitate its administration and increase patient compliance.
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Affiliation(s)
- Kristýna Mrštná
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic.
- The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Kateřina Matoušová
- The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Petr Matouš
- The Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Ludmila Matysová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic.
| | - František Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic.
| | - Eva Šnejdrová
- The Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Lenka Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic.
- The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
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Kučerová K, Krčmová LK, Mikanová Z, Matysová L, Melichar B, Švec F. Determination of urinary retinol and creatinine as an early sensitive marker of renal dysfunction. J Chromatogr A 2019; 1607:460390. [PMID: 31362831 DOI: 10.1016/j.chroma.2019.460390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 10/26/2022]
Abstract
Determination of urinary retinol, which is a new promising early biomarker of renal damage typically expressed in the clinical environment as retinol/creatinine ratio, is currently difficult to accomplish. We have developed and validated the new ultra-high-performance liquid chromatography method with UV and mass spectrometry detection for the separation and quantification of retinol and creatinine in human urine in a single run. The separation of these two substances with completely different physicochemical properties was achieved using a column packed with fluorinated stationary phase and acetonitrile and aqueous ammonium formate buffer as the mobile phases. The separation was completed within 4 min. Our new method involves very fast and simple sample preparation requiring small amount of sample matrix and solvents. Deuterium labeled internal standard was used for the more precise quantification. The method was tested with real-life samples using urine collected from patients suffering from breast, colorectal, head, and neck cancer.
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Affiliation(s)
- Kateřina Kučerová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Lenka Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic.
| | - Zuzana Mikanová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Ludmila Matysová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Bohuslav Melichar
- The Department of Oncology, Palacký University Olomouc, Faculty of Medicine and Dentistry, I.P. Pavlova 6, 779 00 Olomouc, Czech Republic
| | - Frantisek Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
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Zahálka L, Klovrzová S, Matysová L, Šklubalová Z, Solich P. Furosemide ethanol-free oral solutions for paediatric use: formulation, HPLC method and stability study. Eur J Hosp Pharm 2017; 25:144-149. [PMID: 31157009 DOI: 10.1136/ejhpharm-2017-001264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/26/2017] [Accepted: 07/03/2017] [Indexed: 11/03/2022] Open
Abstract
Background Oral liquid solutions of the diuretic active ingredient furosemide (FUR) marketed across Europe do not comply with recent requirements for paediatric preparation owing to their ethanol content and, moreover, in some countries only tablet or injection dosage forms of furosemide are available. Objectives To formulate extemporaneous paediatric ethanol-free solutions of FUR (2 mg/mL) with suitable solubility in the aqueous vehicle and an acceptable taste and to evaluate their stability under two different storage conditions during a 9-month study period. Methods Our work presents two developed formulations of FUR ethanol-free paediatric oral solutions 2 mg/mL for easy extemporaneous compounding in a pharmacy. FUR solubility avoiding the use of ethanol was achieved using sodium hydroxide (formulation F1) or disodium hydrogen phosphate dodecahydrate (formulation F2). The preparations were stored at 25°C±3°C or at 40°C±0.5°C and protected from light. For FUR and preservative, methylparaben (MP), a stability assay was conducted by a high-performance liquid chromatography validated method and determination of pH stability. Results The remaining FUR concentration was >90% of the initial concentration after 270 days in both formulations at both storage conditions, 25°C and 40°C. The concentration of MP decreased significantly in the formulation F2 stored at 40°C. Conclusions Both formulations were stable when stored at room temperature for up to 9 months; formulation F1 was stable even at 40°C. MP used as an antimicrobial agent fully satisfied the recommended criteria for preservative efficacy in oral preparations according to the European Pharmacopoeia 9.0 (5.1.3).
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Affiliation(s)
- Lukáš Zahálka
- Department of Analytical Chemistry, Charles University, Hradec Kralove, Czech Republic
| | - Sylva Klovrzová
- Department of Pharmaceutical Technology, Charles University, Hradec Kralove, Czech Republic.,Hospital Pharmacy, University Hospital Motol, Prague, Czech Republic
| | - Ludmila Matysová
- Department of Analytical Chemistry, Charles University, Hradec Kralove, Czech Republic
| | - Zdenka Šklubalová
- Department of Pharmaceutical Technology, Charles University, Hradec Kralove, Czech Republic
| | - Petr Solich
- Department of Analytical Chemistry, Charles University, Hradec Kralove, Czech Republic
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Petrželová M, Horák P, Hordějčuková A, Matysová L. Omeprazole suspension 2 mg/ml - a new dosage form for pediatric use. ACTA ACUST UNITED AC 2017. [DOI: 10.36290/lek.2017.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Klovrzová S, Zahálka L, Kříž T, Zahálková O, Matysová L, Šklubalová Z, Horák P. Extemporaneous sotalol hydrochloride oral solutions for use in paediatric cardiology: formulation and stability study. Eur J Hosp Pharm 2016; 23:33-37. [PMID: 31156811 DOI: 10.1136/ejhpharm-2015-000711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 07/04/2015] [Accepted: 07/22/2015] [Indexed: 11/03/2022] Open
Abstract
Objectives Sotalol hydrochloride (SOT) is an antiarrhythmic β-blocker which is highly effective for the treatment of supraventricular tachycardia in children. However, a licensed paediatric dosage form with sotalol is not currently available in Europe. The aim of this work was to formulate paediatric oral solutions with SOT 5 mg/mL for extemporaneous preparation in a hospital pharmacy with the lowest possible amount of excipients and to determine their stability. Methods Three aqueous solutions were formulated. One preparation without any additives for neonates and two preparations for children from 1 month of age were compounded using citric acid to stabilise the pH value, potassium sorbate 0.1% w/v as a preservative, and simple syrup or sodium saccharin as a sweetener. The samples were stored at room temperature and in a refrigerator, respectively, and the content of SOT and potassium sorbate was determined simultaneously using a validated high performance liquid chromatography method at different time points over 180 days. Results At least 95% of the initial sotalol concentration remained throughout the 180-day study period in all three preparations at both temperatures. The content of potassium sorbate decreased by 17% with sodium saccharin stored at room temperature. Conclusions The three proposed oral aqueous solutions of SOT for neonates and infants were stable for 180 days. Storage in a refrigerator is preferred, particularly with sodium saccharin. The additive-free solution of SOT can be autoclaved to ensure microbiological stability and used particularly for neonates and in emergency situations.
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Affiliation(s)
- Sylva Klovrzová
- Hospital Pharmacy, University Hospital Motol, Prague, Czech Republic.,Faculty of Pharmacy, Department of Pharmaceutical Technology, Charles University in Prague, Hradec Králové, Czech Republic
| | - Lukáš Zahálka
- Faculty of Pharmacy, Department of Analytical Chemistry, Charles University in Prague, Hradec Králové, Czech Republic
| | - Tomáš Kříž
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Charles University in Prague, Hradec Králové, Czech Republic
| | - Oxana Zahálková
- Faculty of Pharmacy, Department of Analytical Chemistry, Charles University in Prague, Hradec Králové, Czech Republic
| | - Ludmila Matysová
- Faculty of Pharmacy, Department of Analytical Chemistry, Charles University in Prague, Hradec Králové, Czech Republic
| | - Zdenka Šklubalová
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Charles University in Prague, Hradec Králové, Czech Republic
| | - Petr Horák
- Hospital Pharmacy, University Hospital Motol, Prague, Czech Republic
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Havlíková L, Pannyová A, Matysová L, Solich P. Development of Novel Stability-Indicating Method for the Determination of Dimethindene Maleate and Its Impurities. Chromatographia 2013. [DOI: 10.1007/s10337-013-2449-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Klovrzová S, Zahálka L, Matysová L, Horák P, Sklubalová Z. Pediatric oral solutions with propranolol hydrochloride for extemporaneous compounding: the formulation and stability study. Ceska Slov Farm 2013; 62:35-39. [PMID: 23578266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
UNLABELLED The aim of this study is to formulate an extemporaneous pediatric oral solution of propranolol hydrochloride (PRO) 2 mg/ml for the therapy of infantile haemangioma or hypertension in a target age group of 1 month to school children and to evaluate its stability. A citric acid solution and/or a citrate-phosphate buffer solution, respectively, were used as the vehicles to achieve pH value of about 3, optimal for the stability of PRO. In order to mask the bitter taste of PRO, simple syrup was used as the sweetener. All solutions were stored in tightly closed brown glass bottles at 5 ± 3 °C and/or 25 ± 3 °C, respectively. The validated HPLC method was used to evaluate the concentration of PRO and a preservative, sodium benzoate, at time intervals of 0-180 days. All preparations were stable at both storage temperatures with pH values in the range of 2.8-3.2. According to pharmacopoeial requirements, the efficacy of sodium benzoate 0.05 % w/v was proved (Ph.Eur., 5.1.3). The preparation formulated with the citrate-phosphate buffer, in our experience, had better palatability than that formulated with the citric acid solution. KEYWORDS propranolol hydrochloride pediatric preparation extemporaneous preparation solution stability testing HPLC.
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Sklenářová H, Chocholouš P, Koblová P, Zahálka L, Šatínský D, Matysová L, Solich P. High-resolution monolithic columns—a new tool for effective and quick separation. Anal Bioanal Chem 2012. [DOI: 10.1007/s00216-012-6561-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Žáková P, Sklenářová H, Nováková L, Hájková R, Matysová L, Solich P. Application of monolithic columns in pharmaceutical analysis. Determination of indomethacin and its degradation products. J Sep Sci 2009; 32:2786-92. [DOI: 10.1002/jssc.200900217] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Matysová L, Havlíková L, Hájková R, Krivda A, Solich P. Application of HILIC stationary phase to determination of dimethindene maleate in topical gel. J Pharm Biomed Anal 2009; 50:23-6. [DOI: 10.1016/j.jpba.2009.03.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Revised: 03/23/2009] [Accepted: 03/25/2009] [Indexed: 10/20/2022]
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Havlíková L, Matysová L, Hájková R, Šatínský D, Solich P. Advantages of pentafluorophenylpropyl stationary phase over conventional C18 stationary phase—Application to analysis of triamcinolone acetonide. Talanta 2008; 76:597-601. [DOI: 10.1016/j.talanta.2008.03.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Revised: 03/25/2008] [Accepted: 03/28/2008] [Indexed: 10/22/2022]
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Havlíková L, Matysová L, Nováková L, Hájková R, Solich P. HPLC determination of chlorhexidine gluconate and p-chloroaniline in topical ointment. J Pharm Biomed Anal 2006; 43:1169-73. [PMID: 17097258 DOI: 10.1016/j.jpba.2006.09.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2006] [Revised: 09/26/2006] [Accepted: 09/27/2006] [Indexed: 11/20/2022]
Abstract
A novel fast isocratic reversed-phase HPLC method for simultaneous determination of chlorhexidine and its degradation product p-chloroaniline was developed. Zorbax SB Phenyl column (75 mm x 4.6 mm, 3.5 microm) was used for the separation. Mobile phase composed of acetonitrile and buffer solution of 0.08 M sodium phosphate monobasic containing 5 ml of triethylamine (0.5%) and adjust with 85% phosphoric acid to pH 3.0 in ratio 35:65 (v/v) pumped isocratically at flow rate 0.6 ml min(-1) was used. UV detection was performed at 239 nm, the total analysis time was about 10 min. The method is suitable for practical routine analysis of topical ointment in the quality control laboratory.
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Affiliation(s)
- L Havlíková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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17
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Havlíková L, Nováková L, Matysová L, Sícha J, Solich P. Determination of estradiol and its degradation products by liquid chromatography. J Chromatogr A 2006; 1119:216-23. [PMID: 16466732 DOI: 10.1016/j.chroma.2006.01.085] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2005] [Revised: 01/11/2006] [Accepted: 01/19/2006] [Indexed: 11/25/2022]
Abstract
A novel HPLC method for simultaneous determination of estradiol and its seven degradation products in topical gel was developed. Zorbax SB-CN (150 mm x 4.6 mm, 5 microm) analytical column and mobile phase composed of acetonitrile, phosphoric acid 0.085%, and tetrahydrofurane (27:63:10, v/v/v) at flow-rate 1.0 ml min(-1) were used for the chromatographic separation using UV detection at 225 nm. The active substance estradiol was separated from all its known degradation products successfully. Two degradation products estrone and Delta(9(11))-estrone were not separated sufficiently, their peaks were evaluated as a sum of two components. The method was validated according to ICH guideline recommendations and thereafter it was successfully applied for stability tests of topical cream Estrogel HBF in the quality control laboratory. Limits of detection for degradation products ranged from 1.03 x 10(-5) to 1.14 x 10(-4) mg ml(-1), limits of quantitation for degradation products were in the range 3.43 x 10(-5) to 3.81 x 10(-4) mg ml(-1). The developed method is selective, precise, accurate and sensitive enough for determination of estradiol and its known degradation products.
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Affiliation(s)
- Lucie Havlíková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
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18
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Havlíková L, Matysová L, Nováková L, Solich P. HPLC determination of calcium pantothenate and two preservatives in topical cream. J Pharm Biomed Anal 2006; 41:671-5. [PMID: 16473491 DOI: 10.1016/j.jpba.2006.01.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2005] [Revised: 12/22/2005] [Accepted: 01/04/2006] [Indexed: 11/29/2022]
Abstract
A RP-HPLC method for simultaneous determination of calcium pantothenate and two preservatives methylparaben and propylparaben present in topical cream was developed. Different analytical columns with various stationary phases were tested. During method development, Supelco Discovery C18 column (125 mmx4.0 mm, 5 microm) and Zorbax SB-CN column (150 mmx4.6 mm, 5 microm) were tested. Both were not convenient for analytical separation because of the co-elution of calcium pantothenate with dead volume, and problems with the peak-shape of all components. Good separation was achieved using Zorbax TSM (250 mmx4.6 mm, 5 microm) and Hypersil ODS column (250 mmx4.6 mm, 5 microm), the latter was finally used for the analysis. The analysis time was 12 min, at flow rate 0.7 ml min-1. Chromatography was performed using binary mobile phase composed of methanol and phosphoric acid, pH 2.5, 65:35 (v/v). UV detection was accomplished at 214 nm. The method was validated according to ICH guideline recommendations. The method is suitable for practical routine analysis of commercially produced topical pharmaceutical preparations.
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Affiliation(s)
- L Havlíková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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19
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Matysová L, Solich P, Marek P, Havlíková L, Nováková L, Šícha J. Separation and determination of terbinafine and its four impurities of similar structure using simple RP-HPLC method. Talanta 2006; 68:713-20. [DOI: 10.1016/j.talanta.2005.05.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2005] [Revised: 05/13/2005] [Accepted: 05/16/2005] [Indexed: 11/28/2022]
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Nováková L, Matysová L, Havlíková L, Solich P. Development and validation of HPLC method for determination of indomethacin and its two degradation products in topical gel. J Pharm Biomed Anal 2005; 37:899-905. [PMID: 15862664 DOI: 10.1016/j.jpba.2004.09.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2004] [Revised: 09/13/2004] [Accepted: 09/14/2004] [Indexed: 11/18/2022]
Abstract
Indomethacin forms by decomposition two degradation products: 4-chlorobenzoic acid and 5-methoxy-2-methylindoleacetic acid. They have to be monitored together with an active substance both during manufacturing process and storage of pharmaceuticals. European Pharmacopoeia (Ph. Eur. 4) describes titration method for determination of indomethacin, which is not very convenient in this case for practical use. Therefore, high performance liquid chromatography is the method-of-choice enabling determination of active substance and its degradation products during one-step procedure simultaneously and automatically. We have developed a fast, simple and fully automated analytical method for determination of indomethacin and its two impurities in pharmaceutical preparation using HPLC with UV detection. Various stationary phases were tested, especially new types of Zorbax columns made by Agilent. While the conventional C18 stationary phases were not convenient enough to achieve quick and reliable separation, Zorbax-Phenyl analytical column (75 mm x 4.6 mm, 3.5 microm) enables separation of indomethacin and its two degradation products during 7.5 min. Chromatography was performed using isocratic elution with binary mobile phase composed of acetonitrile and 0.2% phosphoric acid (50:50, v/v) at flow rate 0.6 ml/min. Even faster separation of standards was obtained with analytical column Zorbax SB-CN (150 mm x 4.6 mm, 5 microm). The separation was effected with mobile phase of the same composition, only the flow rate was increased to 1.2 ml/min. The analytical run was shortened to 5 min. Both methods use detection wavelength 237 nm and both can use either ketoprofen or flurbiprofen as internal standard for quantitation. The first method was finally chosen for validation because of the occurrence of placebo interferences in the case of using Zorbax SB-CN. System suitability parameters and validation parameters including method precision, accuracy, linearity, selectivity and robustness were set up. Afterwards, the method was successfully applied for the practical determination of indomethacin and its degradation products in a topical gel and for compound degradation control during stability studies.
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Affiliation(s)
- L Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
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21
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Nováková L, Matysová L, Solichová D, Koupparis MA, Solich P. Comparison of performance of C18 monolithic rod columns and conventional C18 particle-packed columns in liquid chromatographic determination of Estrogel and Ketoprofen gel. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 813:191-7. [PMID: 15556533 DOI: 10.1016/j.jchromb.2004.09.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2004] [Accepted: 09/21/2004] [Indexed: 10/26/2022]
Abstract
The performance of monolithic HPLC columns Chromolith (made by Merck, Germany) and conventional C18 columns Discovery (Supelco, Sigma-Aldrich, Prague, Czech Republic) was tested and the comparison for two topical preparations Ketoprofen gel and Estrogel gel was made. The composition of mobile phases - for Ketoprofen analysis a mixture of acetonitrile, water and phosphate buffer adjusted to pH 3.5 (40:58:2) and for Estrogel analysis a mixture of acetonitrile, methanol, water (23:24:53) - was usually not optimal for analyses at all types of columns. Thus an adjustment of components ratio was necessary for sufficient resolution of the compounds analysed. Various flow rates (1.0-5.0 ml/min) and mobile phases (usually increasing ratio of water content) were applied. Determination of active substances, preservatives and impurities and comparison of retention times and system suitability test parameters was accomplished. For Estrogel gel, following chromatographic conditions were found: using Chromolith Flash RP-18e monolith column, mobile phase was acetonitrile, methanol, water (13:24:63, v/v/v) and flow-rate 3.0 ml/min. Using monolith column ChromolithSpeedROD RP-18e, the mobile phase was acetonitrile, methanol, water (18:24:58, v/v/v) and flow-rate 4.0 ml/min. For the monolith column Chromolith Performance RP-18e, the mobile phase was acetonitrile, methanol, water (23:24:53, v/v/v), flow-rate 3.0ml/min. Analysis of Ketoprofen gel gave the best results using following analytical conditions: for monolith column Chromolith Flash RP-18e, mobile phase as a mixture of acetonitrile, water, phosphate buffer pH 3.5 (30:68:2, v/v/v) was used, at flow-rate 2.0 ml/min. For ChromolithSpeedROD RP-18e monolith column, acetonitrile, water, phosphate buffer pH 3.5 (35:63:2, v/v/v) was used as a mobile phase at flow-rate 3.0 ml/min. Chromolith Performance RP-18e gave the best results using mobile phase acetonitrile, water, phosphate buffer pH 3.5 (30:68:2, v/v/v) at the flow-rate 5.0 ml/min. It was proved that monolith columns, due to their porosity and low back-pressure, can save analysis time by about a factor of three with sufficient separation efficiency. Thus, for example 11 min long analysis can be performed in 4 min with comparable results.
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Affiliation(s)
- Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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Dvorák J, Hájková R, Matysová L, Nováková L, Koupparis MA, Solich P. Simultaneous HPLC determination of ketoprofen and its degradation products in the presence of preservatives in pharmaceuticals. J Pharm Biomed Anal 2004; 36:625-9. [PMID: 15522540 DOI: 10.1016/j.jpba.2004.07.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2004] [Revised: 06/22/2004] [Accepted: 07/08/2004] [Indexed: 11/15/2022]
Abstract
A novel and quick high-performance liquid chromatography (HPLC) method with UV spectrophotometric detection was developed and validated for the determination of five compounds in topical gel. The described method is suitable for simultaneous determination of active component ketoprofen, two preservatives methylparaben and propylparaben and two degradation products of ketoprofen--3-acetylbenzophenone and 2-(3-carboxyphenyl) propionic acid--in a topical cream after long-term stability tests using ethylparaben as an internal standard. The chromatographic separation was performed on a 5microm Supelco Discovery C18 column (125mm x 4mm i.d., Sigma-Aldrich); the optimal mobile phase for separation of ketoprofen, methylparaben, propylparaben, degradation products 3-acetylbenzophenone and 2-(3-carboxyphenyl) propionic acid and ethylparaben as internal standard consists of a mixture of acetonitril, water and phosphate buffer pH 3.5 (40:58:2, v/v/v). At a flow rate of 1.0ml min(-1) and detection at 233nm, the total time of analysis was less than 10min. The method was applied for routine analysis (batch analysis and stability tests) of these compounds in topical pharmaceutical product.
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Affiliation(s)
- J Dvorák
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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Nováková L, Solich P, Matysová L, Sícha J. HPLC determination of estradiol, its degradation product, and preservatives in new topical formulation Estrogel HBF. Anal Bioanal Chem 2004; 379:781-7. [PMID: 14997260 DOI: 10.1007/s00216-004-2532-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2003] [Revised: 01/26/2004] [Accepted: 01/29/2004] [Indexed: 11/26/2022]
Abstract
This paper deals with the development of a novel method for simultaneous determination of estradiol, its degradation product estrone, and two preservatives, methylparaben and propylparaben, in the topical preparation Estradiol HBF. After optimization of the analytical conditions the method was validated and applied in studies of the stability of the topical preparation Estrogel HBF. Separation of all these compounds was performed on a Supelco Discovery C18 (250 mm x 3.0 mm, 5 microm) analytical column. A mixture of acetonitrile, methanol, and water (23:24:53 v/ v) was chosen as mobile phase. UV absorbance at 225 nm was used for detection and quantitation of analytes. The total analysis time was less than 12 min at a flow rate of 0.9 mL min(-1). All the compounds were isolated from the topical gel by simple extraction with an acetonitrile solution of hydrocortisone, as internal standard, and using sonication and centrifugation thereafter. The supernatant was injected directly on to the analytical column. The recovery of the procedure was from 96.9 to 100.4%. Validation of method according international guidelines was successfully performed.
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Affiliation(s)
- Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
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Matysová L, Hájková R, Sícha J, Solich P. Determination of methylparaben, propylparaben, triamcinolone acetonide and its degradation product in a topical cream by RP-HPLC. Anal Bioanal Chem 2003; 376:440-3. [PMID: 12819846 DOI: 10.1007/s00216-003-1756-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2002] [Revised: 12/05/2002] [Accepted: 12/11/2002] [Indexed: 10/26/2022]
Abstract
A novel reversed-phase high-performance liquid chromatographic (RP-HPLC) method was developed and validated for the determination of active component triamcinolone acetonide, its degradation product triamcinolone (occurring in formulation after long-term stability tests) and two preservatives presented in the cream-methylparaben and propylparaben, using hydrocortisone as an internal standard. The chromatographic separation was performed on a Supelco Discovery C18 column; the mobile phase for separation of all compounds consists of a mixture of acetonitrile and water (40:60 v/v). The analysis time was less than 9 min, at a flow rate of 0.6 mL min(-1) and detection at 240 nm. The method was found to be applicable for routine analysis (stability tests, homogeneity) in the pharmaceutical product topical cream Triamcinolon cream 0.1%.
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Affiliation(s)
- L Matysová
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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