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Parsha S, Kumar YR, Ravichander M. LC–MS/MS and NMR Characterization of Key Impurities in Linagliptin and Pramipexole. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1087861] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Swetha Parsha
- Department of Analytical Research and Development, Integrated Product Development, Dr. Reddy’s Laboratories, Hyderabad, India
- Department of Chemistry, Jawaharlal Nehru Technological University, Hyderabad, India
| | - Y. Ravindra Kumar
- Department of Analytical Research and Development, Integrated Product Development, Dr. Reddy’s Laboratories, Hyderabad, India
| | - M. Ravichander
- Department of Chemistry, Mahatma Gandhi Institute of Technology, Hyderabad, India
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Maggio RM, Calvo NL, Vignaduzzo SE, Kaufman TS. Pharmaceutical impurities and degradation products: uses and applications of NMR techniques. J Pharm Biomed Anal 2014; 101:102-22. [PMID: 24853620 DOI: 10.1016/j.jpba.2014.04.016] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/11/2014] [Accepted: 04/12/2014] [Indexed: 11/29/2022]
Abstract
Current standards and regulations demand the pharmaceutical industry not only to produce highly pure drug substances, but to achieve a thorough understanding of the impurities accompanying their manufactured drug substances and products. These challenges have become important goals of process chemistry and have steadily stimulated the search of impurities after accelerated or forced degradation procedures. As a result, impurity profiling is one of the most attractive, active and relevant fields of modern pharmaceutical analysis. This activity includes the identification, structural elucidation and quantitative determination of impurities and degradation products in bulk drugs and their pharmaceutical formulations. Nuclear magnetic resonance (NMR) spectroscopy has evolved into an irreplaceable approach for pharmaceutical quality assessment, currently playing a critical role in unequivocal structure identification as well as structural confirmation (qualitative detection), enabling the understanding of the underlying mechanisms of the formation of process and/or degradation impurities. NMR is able to provide qualitative information without the need of standards of the unknown compounds and multiple components can be quantified in a complex sample without previous separation. When coupled to separative techniques, the resulting hyphenated methodologies enhance the analytical power of this spectroscopy to previously unknown levels. As a result, and by enabling the implementation of rational decisions regarding the identity and level of impurities, NMR contributes to the goal of making better and safer medicines. Herein are discussed the applications of NMR spectroscopy and its hyphenated derivate techniques to the study of a wide range pharmaceutical impurities. Details on the advantages and disadvantages of the methodology and well as specific challenges with regards to the different analytical problems are also presented.
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Affiliation(s)
- Rubén M Maggio
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Área Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario S2002LRK, Argentina
| | - Natalia L Calvo
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Área Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario S2002LRK, Argentina
| | - Silvana E Vignaduzzo
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Área Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario S2002LRK, Argentina
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Área Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario S2002LRK, Argentina.
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3
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An Overview of Analytical Determination of Diltiazem, Cimetidine, Ranitidine, and Famotidine by UV Spectrophotometry and HPLC Technique. J CHEM-NY 2013. [DOI: 10.1155/2013/184948] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This review article recapitulates the analytical methods for the quantitative determinations of diltiazem and three H2receptor antagonists (cimetidine, ranitidine, and famotidine) by one of the spectroscopic technique (UV spectrophotometery) and separation technique such as high-performance liquid chromatography (HPLC). The clinical and pharmaceutical analysis of these drugs requires effective analytical procedures for quality control, pharmaceutical dosage formulations, and biological fluids. An extensive survey of the literature published in various analytical and pharmaceutical chemistry-related journals has been compiled in its review. A synopsis of reported spectrophotometric and high-performance liquid chromatographic methods for individual drug is integrated. This appraisal illustrates that majority of the HPLC methods reviewed are based on the quantitative analysis of drugs in biological fluids, and they are appropriate for therapeutic drug monitoring purpose.
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Liang X, Patel H, Young J, Shah P, Raglione T. The practical application of implementing the equimolar response principle of chemiluminescent nitrogen detection in pharmaceutical analysis. J Pharm Biomed Anal 2008; 47:723-30. [DOI: 10.1016/j.jpba.2008.02.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 02/19/2008] [Accepted: 02/21/2008] [Indexed: 10/22/2022]
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Görög S. Drug safety, drug quality, drug analysis. J Pharm Biomed Anal 2007; 48:247-53. [PMID: 18082992 DOI: 10.1016/j.jpba.2007.10.038] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Accepted: 10/12/2007] [Indexed: 02/07/2023]
Abstract
Controlling and minimizing the side effects of drugs are the key issues in assuring the safety of drug therapy. Since side effects are inherent properties of the drug material, these cannot be influenced by drug analysts. At the same time drug analysts play a predominant role in assuring the quality of bulk drug materials and drug formulations and this is also closely related to the safety issue. The three main attributes of drug quality are identity, strength and purity. Of these, in the case of bulk drug materials, purity is of prominent importance: by the identification (structure elucidation) and quantitative determination of the impurities and degradation products, the risk of their contribution to the side effect profile of the drug materials can be avoided or at least controlled/minimized. The development in the field of chromatographic and spectroscopic methods in the last decades has led to changes in the philosophy, structure and requirements in the monographs of drug materials in the principal pharmacopoeias. Although the approaches of the European and US Pharmacopoeias are somewhat different, a common feature is the shift of focal point toward purity tests. In contrast to this, relatively few changes are observable in the field of the assay methods for bulk drug materials: non-selective titrimetric and spectrophotometric methods are still widely used. Since the results of these do not contribute to the safety issue, the omission of these tests and substitution by the "mass balance" concept is recommended. The effectiveness of the tendency of replacing non-selective methods by selective ones (mainly HPLC) is also questionable. The reason for this is that due to the limited precision of the HPLC assay the drug content obtained by the mass balance concept is a much better quality control attribute for bulk drug materials than that obtained by HPLC. It is recommended that classical assay methods (including HPLC) be used in exceptional cases only and the time and energy thus spared be used for more important impurity-related issues that directly contribute to the safety of drug therapy.
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Affiliation(s)
- Sándor Görög
- Gedeon Richter Plc., P.O.B. 27, H-1475 Budapest, Hungary.
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6
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Determination of organic impurities in pharmaceutical preparations. JOURNAL OF ANALYTICAL CHEMISTRY 2005. [DOI: 10.1007/s10809-005-0003-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Glazkov IN, Bochkareva NL, Revel’skii IA. Determination of organic impurities in pharmaceutical preparations. JOURNAL OF ANALYTICAL CHEMISTRY 2005. [DOI: 10.1007/s10809-005-0032-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Determination of organic impurities in pharmaceutical preparations. JOURNAL OF ANALYTICAL CHEMISTRY 2005. [DOI: 10.1007/pl00021913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kamberi M, Riley CM, Ma Sharon X, Huang CWC. A validated, sensitive HPLC method for the determination of trace impurities in acetaminophen drug substance. J Pharm Biomed Anal 2004; 34:123-8. [PMID: 14738926 DOI: 10.1016/j.japna.2003.08.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A high-performance liquid chromatography (HPLC) method has been developed and validated for the simultaneous determination of n-propionyl-p-aminophenol, 3-chloro-4-hydroxyacetanilide, 4'-hydroxyacetophenone, 4-hydroxyacetophenone oxime, 4-acetoxyacetanilide and 4'-chloroacetanilide, the main impurities in acetaminophen drug substance. The chromatographic separation was achieved on an Eclipse XDB-18 reversed-phase column using a gradient elution, being solvent A: 0.01 M phosphate buffer at pH 3.0 and solvent B: methanol. The limit of quantitation (S/N=10:1) was 0.1 microg/ml for each impurity. The coefficients of variation were less than 4% for intra-day and inter-day analyses. The individual recovery of acetaminophen spiked samples ranged from 94 to 104% and the mean recovery for each level from 99 to 103% in the 1-150 microg/ml range for all impurities. The proposed method was successfully applied to the analyses of different lots and different manufactures of acetaminophen drug substance. The proposed method can be used for the routine quality control of acetaminophen.
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Affiliation(s)
- Marika Kamberi
- Department of Analytical Sciences, ALZA Corporation, Mountain View, 1501 California Avenue, Palo Alto, CA 94304, USA.
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Nageswara Rao R, Nagaraju V. An overview of the recent trends in development of HPLC methods for determination of impurities in drugs. J Pharm Biomed Anal 2003; 33:335-77. [PMID: 14550856 DOI: 10.1016/s0731-7085(03)00293-0] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An extensive survey of the literature published in various analytical and pharmaceutical chemistry related journals has been conducted and the high-performance liquid chromatography (HPLC) methods which were developed and used for determination of process-related impurities in drugs have been reviewed. This review covers the time period from 1995 to 2001 during which around 450 analytical methods including all types of chromatographic and hyphenated techniques were reported. HPLC with UV detection was found to be the technique of choice for many workers and more than 200 methods were developed using LC-UV alone. A critical analysis of the reported data has been carried out and the present state-of-art of HPLC for determination of impurities of analgesic, antibiotic, anti-viral, anti-hypertensive, anti-depressant, gastro-intestinal and anti-neoplastic agents has been discussed.
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Affiliation(s)
- R Nageswara Rao
- HPLC Group, Analytical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India.
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Abstract
Pesticides, which are mainly applied on crops for the protection of plants against a range of pests, have been found in crude medicinal plants as well as in infusions, decoctions, tinctures and essential oils. This fact has caused concern in various segments of society and scientific investigation has been demanded to assess the health hazards more accurately. The present review covers more than 30 years (1963-1998) of published methods of analysing pesticide residues in medicinal plants, with special emphasis on the relevance of these matrices, the legislation, the risks involved in using material containing uncontrolled amounts of residues and the possible effects of technological factors on the proportion of pesticide transferred from the raw material to the end product.
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Affiliation(s)
- V G Zuin
- Universidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil
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2.7 High performance liquid chromatography (HPLC) and related techniques. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1464-3456(00)80017-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Mey B, Paulus H, Lamparter E, Blaschke G. Enantioseparation of amfepramone (rac-diethylpropion): preparative separation of the enantiomers and enantioselective analysis. Chirality 1999; 11:772-80. [PMID: 10561707 DOI: 10.1002/(sici)1520-636x(1999)11:10<772::aid-chir6>3.0.co;2-e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The enantiomers of the anorectic drug amfepramone [rac-diethylpropion, rac-2-(diethylamino)-1-phenyl-1-propanone; rac-DEP] were separated in the preparative scale by crystallization. With enantiopure di-O-benzoyltartaric acid as salt-forming chiral selector, diastereoisomeric salts of DEP enantiomers with a final purity of more than 97.5% were obtained. Analytical liquid chromatographic and electrophoretic methods for the control of the enantiomeric purity and the stoichiometry of the salts were developed. The enantioseparation of rac-DEP by capillary electrophoresis (CE) using hydroxypropyl-beta-cyclodextrin (HP-beta-CD) as chiral discriminator and phosphate buffer (pH 3.3) as run buffer led to good separations. HPLC methods were developed using polysaccharide chiral stationary phases (CSP). The separation of the two enantiomers and the two main degradation products (1-phenyl-1,2-propanedione and propiophenone), known from solid and liquid pharmaceutical preparations, was attained in one run on the silica-based CSP cellulose tris(3,5-dimethylphenylcarbamate) (Chiralcel OD). The conditions which might affect the enantioselectivity and the quality of the enantiomeric separation were investigated for Chiralcel OD and the related CSP amylose tris(3,5-dimethylphenylcarbamate) (Chiralpak AD). Both CSPs showed very similar chromatographic properties. The separation factors could be influenced significantly by varying the polar organic modifier added to the mobile phase.
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Affiliation(s)
- B Mey
- Central Institute of the Federal Armed Forces Medical Service, Munich, Germany
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