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Papp LA, Hancu G, Szabó ZI. Simultaneous determination of enantiomeric and organic impurities of vildagliptin on a cellulose tris(3-chloro-4-methylphenylcarbamate) column under revered-phase conditions. J Pharm Biomed Anal 2023; 234:115495. [PMID: 37343452 DOI: 10.1016/j.jpba.2023.115495] [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: 03/29/2023] [Revised: 05/27/2023] [Accepted: 05/28/2023] [Indexed: 06/23/2023]
Abstract
A new, reversed-phase HPLC (RP-HPLC) method was developed for the simultaneous determination of the dipeptidyl-peptidase-IV-inhibitor antidiabetic drug vildagliptin (VIL) enantiomeric impurity and four other achiral related impurities. An initial screening was performed on five polysaccharide-type chiral stationary phases (Lux Amylose-1, Lux Amylose-2, Lux-Cellulose-1, Lux-Cellulose-2, Lux-Cellulose-3) in polar organic mode with methanol, ethanol, 2-propanol, or acetonitrile containing 0,1% diethylamine as mobile phase to identify the best conditions for the separation of VIL enantiomers. Lux-Cellulose-2 column was found to provide the best chiral resolution for VIL enantiomers. Further experiments were conducted using different aqueous-organic mobile phases to achieve the simultaneous chiral-achiral separation of the selected compounds. Experimental design-based optimization was performed by using a face-centered central composite design. The optimal separation conditions (Lux Cellulose-2 stationary phase, 45 °C, mobile phase consisting of methanol/water/diethylamine 80:20:0.2 (v/v/v), and 0.45 mL/min flow rate) provided baseline separation for all 6 compounds. The optimized method was validated according to the ICH guideline and proved to be reliable, specific, linear, precise, and accurate for the determination of at least 0.1% for all impurities in VIL samples. The validated method was applied for determinations from a commercially available drug formulation and proved to be suitable for routine quality control of both enantiomeric and organic impurities of VIL.
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Affiliation(s)
- Lajos-Attila Papp
- Department of Pharmaceutical and Therapeutic Chemistry, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 540142 Târgu Mureș, Romania
| | - Gabriel Hancu
- Department of Pharmaceutical and Therapeutic Chemistry, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 540142 Târgu Mureș, Romania.
| | - Zoltán-István Szabó
- Department of Drugs Industry and Pharmaceutical Management, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 540142 Târgu Mureș, Romania
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2
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Papp LA, Hancu G, Kelemen H, Tóth G. Chiral separation in the class of proton pump inhibitors by chromatographic and electromigration techniques: An overview. Electrophoresis 2021; 42:1761-1789. [PMID: 34004039 DOI: 10.1002/elps.202100032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/27/2021] [Accepted: 05/05/2021] [Indexed: 11/08/2022]
Abstract
Proton pump inhibitors (PPIs) are benzimidazole-derivative chiral sulfoxides, frequently used in the treatment of gastric hyperacidity-related disorders. Due to their stereoselective metabolism, the eutomeric forms of PPIs can present a more advantageous pharmacokinetic profile by comparison with the distomers or racemates. Moreover, two representatives of the class are used in therapy both as racemates and as pure enantiomers (esomeprazole, dexlansoprazole). A relatively large number of enantioseparation methods employed for the stereoselective determination of PPIs from pharmaceutical, biological, and environmental matrices were published in the past three decades. The purpose of the current overview is to provide a systematic survey of the available chiral separation methods published since the introduction of PPIs in the therapy up to the present. Analytical and bioanalytical methods using different chromatographic and electromigration techniques reported for the enantioseparation of omeprazole, lansoprazole, pantoprazole, rabeprazole, ilaprazole, and tenatoprazole are included. The analytical conditions of the presented methods are summarized in three comprehensive tables, while a critical discussion of the applied techniques, possible mechanism of enantiorecognition, and future perspectives on the topic are also presented.
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Affiliation(s)
- Lajos Attila Papp
- Department of Pharmaceutical Chemistry, "George Emil Palade" University of Medicine, Pharmacy, Sciences and Technology of Târgu Mureș, Romania
| | - Gabriel Hancu
- Department of Pharmaceutical Chemistry, "George Emil Palade" University of Medicine, Pharmacy, Sciences and Technology of Târgu Mureș, Romania
| | - Hajnal Kelemen
- Department of Pharmaceutical Chemistry, "George Emil Palade" University of Medicine, Pharmacy, Sciences and Technology of Târgu Mureș, Romania
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
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3
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Tóth G, Fogarasi E, Bartalis-Fábián Á, Foroughbakhshfasaei M, Boldizsár I, Darcsi A, Lohner S, Scriba GK, Szabó ZI. Liquid chromatographic method for the simultaneous determination of achiral and chiral impurities of dapoxetine in approved and counterfeit products. J Chromatogr A 2020; 1626:461388. [DOI: 10.1016/j.chroma.2020.461388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/30/2020] [Accepted: 07/03/2020] [Indexed: 02/07/2023]
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4
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Raikar P, Bannimath G. Recent Trends in Chiral Separation-A Collective Paradigm of Selected Chiral Impurities. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666181219144507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Chiral separation plays a very important role in the modern pharmaceutical analysis and will
continue in upcoming years. Separation and identification of chiral impurities are indispensable. According
to ICH guidelines, only the active enantiomer of the drug has to be marketed, so there is a focus
on separation of the inactive enantiomer which acts as a chiral impurity. The impurities present in the
enantiomers also pose various toxic adverse effects on bioavailability and efficacy, hence the need to
separate these impurities will forever be trending. This review primarily focuses on the separation techniques
like Capillary Electrophoresis (CE), High-Performance Liquid Chromatography (HPLC), Gas
Chromatography (GC), and Supercritical Fluid Chromatography (SFC) followed by the year-wise trend
in the separation of selected chiral impurities. In the coming years, researchers should work on using
ultra-fast, selective, and sensitive methods for the effective separation of chiral impurities.
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Affiliation(s)
- Prachi Raikar
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education and Research, SS Nagar, Mysuru 570015, India
| | - Gurupadayya Bannimath
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education and Research, SS Nagar, Mysuru 570015, India
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Luo L, Wen X, Du Y, Jiang Z, Guo X. Enantioselective analysis of lansoprazole in rat plasma by LC-MS/MS: Application to a stereoselective pharmacokinetic study. Biomed Chromatogr 2018; 32:e4345. [DOI: 10.1002/bmc.4345] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 07/06/2018] [Accepted: 07/11/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Linda Luo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xiaoli Wen
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Yueying Du
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Zhen Jiang
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xingjie Guo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
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6
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Khatiashvili T, Kakava R, Matarashvili I, Tabani H, Fanali C, Volonterio A, Farkas T, Chankvetadze B. Separation of enantiomers of selected chiral sulfoxides with cellulose tris(4-chloro-3-methylphenylcarbamate)-based chiral columns in high-performance liquid chromatography with very high separation factor. J Chromatogr A 2018; 1545:59-66. [DOI: 10.1016/j.chroma.2018.02.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/17/2018] [Accepted: 02/25/2018] [Indexed: 11/16/2022]
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7
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Chung HK, Truong QK, Mai XL, Choi Y, Kang JS, Mar W, Kim KH. Determination of S-(−)-lansoprazole in dexlansoprazole preparation by capillary zone electrophoresis. Arch Pharm Res 2017; 40:962-971. [DOI: 10.1007/s12272-017-0936-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/25/2017] [Indexed: 11/27/2022]
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8
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Shankar G, Borkar RM, Suresh U, Guntuku L, Naidu VGM, Nagesh N, Srinivas R. Forced degradation studies of lansoprazole using LC-ESI HRMS and 1 H-NMR experiments: in vitro toxicity evaluation of major degradation products. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:459-471. [PMID: 28544042 DOI: 10.1002/jms.3949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/12/2017] [Accepted: 05/15/2017] [Indexed: 06/07/2023]
Abstract
Regulatory agencies from all over the world have set up stringent guidelines with regard to drug degradation products due to their toxic effects or carcinogenicity. Lansoprazole, a proton-pump inhibitor, was subjected to forced degradation studies as per ICH guidelines Q1A (R2). The drug was found to degrade under acidic, basic, neutral hydrolysis and oxidative stress conditions, whereas it was found to be stable under thermal and photolytic conditions. The chromatographic separation of the drug and its degradation products were achieved on a Hiber Purospher, C18 (250 × 4.6 mm, 5 μ) column using 10 mM ammonium acetate and acetonitrile as a mobile phase in a gradient elution mode at a flow rate of 1.0 ml/min. The eight degradation products (DP1-8) were identified and characterized by UPLC/ESI/HRMS with in-source CID experiments combined with accurate mass measurements. DP-1, DP-2 and DP-3 were formed in acidic, DP-4 in basic, DP-5 in neutral and DP-1, DP-6, DP-7 and DP-8 were in oxidation stress condition Among eight degradation products, five were hitherto unknown degradation products. In addition, one of the major degradation products, DP-2, was isolated by using semi preparative HPLC and other two, DP-6 and DP-7 were synthesized. The cytotoxic effect of these degradation products (DP-2, DP-6 and DP-7) were tested on normal human cells such as HEK 293 (embryonic kidney cells) and RWPE-1(normal prostate epithelial cells) by MTT assay. From the results of cytotoxicity, it was found that lansoprazole as well as its degradation products (DP-2, DP-6 and DP-7) were nontoxic up to 50-μM concentrations, and the latter showed slightly higher cytotoxicity when compared with that of lansoprazole. DNA binding studies using spectroscopic techniques indicate that DP-2, DP-6 and DP-7 molecules interact with ctDNA and may bind to its surface. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- G Shankar
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - R M Borkar
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - U Suresh
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - L Guntuku
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Balanagar, Hyderabad, 500037, India
| | - V G M Naidu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Balanagar, Hyderabad, 500037, India
| | - N Nagesh
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Tarnaka, Hyderabad, 500007, India
| | - R Srinivas
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
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9
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Ferretti R, Zanitti L, Casulli A, Cirilli R. Green high-performance liquid chromatography enantioseparation of lansoprazole using a cellulose-based chiral stationary phase under ethanol/water mode. J Sep Sci 2016; 39:1418-24. [DOI: 10.1002/jssc.201501329] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/04/2016] [Accepted: 02/04/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Rosella Ferretti
- Dipartimento del Farmaco; Istituto Superiore di Sanità; Rome Italy
| | - Leo Zanitti
- Dipartimento del Farmaco; Istituto Superiore di Sanità; Rome Italy
| | - Adriano Casulli
- Dipartimento di Malattie Infettive, Parassitarie ed Immunomediate; Istituto Superiore di Sanità; Rome Italy
| | - Roberto Cirilli
- Dipartimento del Farmaco; Istituto Superiore di Sanità; Rome Italy
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El-Kommos ME, Khashaba PY, Ali HRH, El-Wekil MM. Different Chromatographic and Electrophoretic Methods for Analysis of Proton Pump Inhibitors (PPIs): A Review. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1079722] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Michael E. El-Kommos
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Pakinaz Y. Khashaba
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Hassan Refat H. Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Mohamed M. El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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11
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Simultaneous Chemo/Enantioseparation and Assay of R-(+)-Rabeprazole and Related Impurities in Pharmaceutical Formulations. Chromatographia 2015. [DOI: 10.1007/s10337-015-2968-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Sun L, Cao Y, Jiao H, Fang Y, Yang Z, Bian M, Zhang H, Gong X, Wang Y. Enantioselective determination of (R
)- and (S
)-lansoprazole in human plasma by chiral liquid chromatography with mass spectrometry and its application to a stereoselective pharmacokinetic study. J Sep Sci 2015; 38:3696-703. [PMID: 26333119 DOI: 10.1002/jssc.201500653] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/10/2015] [Accepted: 08/18/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Luning Sun
- Research Division of Clinical Pharmacology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yang Cao
- Department of Gastroenterology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Huiwen Jiao
- Department of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Yunqian Fang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Zhicheng Yang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Mingliang Bian
- Research Division of Clinical Pharmacology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Hongwen Zhang
- Research Division of Clinical Pharmacology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaojian Gong
- Department of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Yongqing Wang
- Research Division of Clinical Pharmacology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
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13
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Battu S, Pottabathini V. Hydrolytic Degradation Study of Lansoprazole, Identification, Isolation and Characterisation of Base Degradation Product. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajac.2015.62013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Fang Y, Wang G, Zhang R, Liu Z, Liu Z, Wu X, Cao D. Eudragit L/HPMCAS blend enteric-coated lansoprazole pellets: enhanced drug stability and oral bioavailability. AAPS PharmSciTech 2014; 15:513-21. [PMID: 24590548 DOI: 10.1208/s12249-013-0035-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 08/20/2013] [Indexed: 11/30/2022] Open
Abstract
The objectives of the present work were to use blends of Eudragit L and hydroxypropyl methylcellulose acetate succinate (HPMCAS) as enteric film coatings for lansoprazole (LSP) pellets. The enteric-coated pellets were prepared with a fluid-bed coater. The influence of the blend ratio, type of plasticizer, plasticizer level, coating level, and curing conditions on gastric stability in vitro drug release and drug stability was evaluated. Furthermore, the bioavailability of the blend-coated pellets in beagle dogs was also performed. The blend-coated pellets exhibited significant improvement of gastric stability and drug stability compared to the pure polymer-coated pellets. Moreover, the AUC values of blend-coated pellets were greater than that of the pure polymer-coated pellets. It was concluded that the using blends of Eudragit L and HPMCAS as enteric film coatings for LSP pellets improved the drug stability and oral bioavailability.
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Gegenava M, Chankvetadze L, Farkas T, Chankvetadze B. Enantioseparation of selected chiral sulfoxides in high-performance liquid chromatography with polysaccharide-based chiral selectors in polar organic mobile phases with emphasis on enantiomer elution order. J Sep Sci 2014; 37:1083-8. [DOI: 10.1002/jssc.201301318] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 02/21/2014] [Accepted: 02/22/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Maia Gegenava
- Institute of Physical and Analytical Chemistry; School of Exact and Natural Sciences, Tbilisi State University; Tbilisi Georgia
| | - Lali Chankvetadze
- Institute of Physical and Analytical Chemistry; School of Exact and Natural Sciences, Tbilisi State University; Tbilisi Georgia
| | | | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry; School of Exact and Natural Sciences, Tbilisi State University; Tbilisi Georgia
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16
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Forced degradation and impurity profiling: Recent trends in analytical perspectives. J Pharm Biomed Anal 2013; 86:11-35. [DOI: 10.1016/j.jpba.2013.07.013] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/28/2013] [Accepted: 07/07/2013] [Indexed: 11/23/2022]
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17
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Cirilli R, Ferretti R, Gallinella B, Zanitti L. Retention behavior of proton pump inhibitors using immobilized polysaccharide-derived chiral stationary phases with organic-aqueous mobile phases. J Chromatogr A 2013; 1304:147-53. [DOI: 10.1016/j.chroma.2013.07.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/03/2013] [Accepted: 07/04/2013] [Indexed: 10/26/2022]
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18
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Dixit S, Dubey R, Bhushan R. Normal and polar-organic-phase high-performance liquid chromatographic enantioresolution of omeprazole, rabeprazole, lansoprazole and pantoprazole using monochloro-methylated cellulose-based chiral stationary phase and determination of dexrabeprazole. Biomed Chromatogr 2013; 28:112-9. [DOI: 10.1002/bmc.2915] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 02/25/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Shuchi Dixit
- Department of Chemistry; Yeungnam University; Gyeongsan 712-749 South Korea
| | - Rituraj Dubey
- Department of Chemistry; National Cheng-Kung University; Tainan Taiwan
| | - Ravi Bhushan
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee 247667 India
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Rao PV, Kumar MN, Kumar MR. A Novel, Validated Stability-Indicating UPLC Method for the Estimation of Lansoprazole and its Impurities in Bulk Drug and Pharmaceutical Dosage Forms. Sci Pharm 2012; 81:183-93. [PMID: 23641337 PMCID: PMC3617664 DOI: 10.3797/scipharm.1210-09] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 12/03/2012] [Indexed: 11/22/2022] Open
Abstract
A novel, reversed-phase ultra-performance liquid chromatographic method was developed and validated for the determination of the assay and related substances of Lansoprazole (LAN) in bulk drug and capsule dosage forms. The related substances include degradation and process-related impurities. The method was developed using the Waters Acquity BEH C18 column and gradient program with mobile phase A as a pH 7.0 phosphate buffer and methanol in the ratio of 90: 10 (v/v), and mobile phase B as methanol and acetonitrile in the ratio of 50:50 (v/v). Lansoprazole and its impurities were monitored at 285 nm. Lansoprazole was subjected to the stress conditions of oxidative, acid, base, hydrolytic, thermal, humidity, and photolytic degradation and found to degrade significantly under acid and oxidative stress conditions. The degradation products were well-resolved from the main peak and its impurities, proving the stability-indicating power of the method. The performance of the method was validated according to the present ICH guidelines for specificity, limit of detection, limit of quantification, linearity, accuracy, precision, ruggedness, and robustness.
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Affiliation(s)
- Papanaboina Venkata Rao
- Dr. Reddy's Laboratories Ltd. IPDO, Bachupally, Hyderabad-500072, A.P, India. ; Department of Chemistry, J. N. T. University, Kukatpally, Hyderabad-500072, A.P, India
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20
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Complementary enantiorecognition patterns and specific method optimization aspects on immobilized polysaccharide-derived chiral stationary phases. J Chromatogr A 2012; 1269:178-88. [DOI: 10.1016/j.chroma.2012.09.071] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 09/06/2012] [Accepted: 09/12/2012] [Indexed: 11/23/2022]
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21
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Zanitti L, Ferretti R, Gallinella B, La Torre F, Sanna ML, Mosca A, Cirilli R. Direct HPLC enantioseparation of omeprazole and its chiral impurities: Application to the determination of enantiomeric purity of esomeprazole magnesium trihydrate. J Pharm Biomed Anal 2010; 52:665-71. [DOI: 10.1016/j.jpba.2010.02.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 02/15/2010] [Accepted: 02/16/2010] [Indexed: 10/19/2022]
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22
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Affiliation(s)
- Timothy J. Ward
- Millsaps College, 1701 N. State Street, Box 150306, Jackson, Mississippi 39210
| | - Karen D. Ward
- Millsaps College, 1701 N. State Street, Box 150306, Jackson, Mississippi 39210
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