title: Development and validation of a stability-indicating liquid chromatographic method for determination of emtricitabine and related impurities in drug substance.
abstract: A novel stability-indicating high-performance liquid chromatographic (HPLC) method was developed and validated for assay and determination of impurities of emtricitabine in drug substance. Emtricitabine was found to be degraded under acidic, alkaline, and oxidative stress conditions and to be more labile under oxidative conditions. The drug proved to be stable to dry heat and photolytic degradation. Resolution of major and minor degradation impurities was achieved on an Intersil ODS-3V column utilizing 10 mM sodium phosphate buffer and methanol (85:15) as mobile phase. Detection was at 280 nm. Validation studies were performed as per ICH recommended conditions. The developed method was found to be linear, accurate, specific, selective, precise, and robust.
authors.affiliation: Quality Assurance, Matrix Laboratories Limited, Secunderabad, Andhra Pradesh, India. chalam_us@rediffmail.com
authors.forename: Unnam
authors.initials: U
authors.lastname: Seshachalam
authors.forename: Bodepudi
authors.initials: B
authors.lastname: Haribabu
authors.forename: Kottapalli B
authors.initials: KB
authors.lastname: Chandrasekhar
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003841:Deoxycytidine / Q000031:analogs & derivatives* / Q000032:analysis; D004340:Drug Contamination; D000068679:Emtricitabine; D015394:Molecular Structure; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013237:Stereoisomerism
chemical_list: D004364:Pharmaceutical Preparations; D003841:Deoxycytidine; D000068679:Emtricitabine