title: Development and Validation of Rapid Stability-Indicating RP-HPLC-DAD Method for the Quantification of Lapatinib and Mass Spectrometry Analysis of Degraded Products.
abstract: A rapid, simple and stability-indicating high-performance liquid chromatography assay method was developed and validated for quantitative analysis of lapatinib (LPT) in bulk pharmaceuticals. The newly developed method was assessed using a C18 MZ-Analytical column (5 µm, 150 × 4.6 mm, OSD-3), which was protected by a (5 µm, 4.0 × 4.6 mm, OSD-3) pre-column with mobile phase that was composed of acetonitrile and water (70/30, v/v) and a detection wave length of 227 nm. The method was validated according to the ICH guidelines with respect to precision, accuracy, linearity, robustness, specificity and system suitability. Forced degradation studies were also performed for LPT to determine the stability-indicating aspect of developed method. The method was found to be specific for LPT in the presence of degradation products. The retention time of LPT was ∼4 min. Accuracy of the method was found to be 2.20% bias for all tested samples. The inter- and intra-day precision of the novel method were found to be 2.84 and 2.78%, respectively. The calibration curve was linear over the concentration range of 5-80 µg/mL with a regression coefficient of 0.9990. The limits of detection and quantification were also found to be 1 and 5 µg/mL, respectively. Mass spectrometry analysis was performed in order to better characterize degraded products.
authors.affiliation: Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-645, Tehran, Iran.
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Saadat
authors.affiliation: Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-645, Tehran, Iran.
authors.forename: Pooya
authors.initials: P
authors.lastname: Dehghan Kelishady
authors.affiliation: Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-645, Tehran, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Ravar
authors.affiliation: Department of Medicinal Chemistry, School of Pharmacy, Shahid Beheshtee University of Medical Sciences, Tehran, Iran.
authors.forename: Farzad
authors.initials: F
authors.lastname: Kobarfard
authors.affiliation: Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-645, Tehran, Iran dorkoosh@tums.ac.ir.
authors.forename: Farid A
authors.initials: FA
authors.lastname: Dorkoosh
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D056148:Chromatography, Reverse-Phase; D004355:Drug Stability; D007477:Ions / Q000032:analysis / Q000737:chemistry; D000077341:Lapatinib; D057230:Limit of Detection; D016014:Linear Models; D013058:Mass Spectrometry / Q000379:methods*; D011799:Quinazolines / Q000032:analysis* / Q000737:chemistry*; D015203:Reproducibility of Results
chemical_list: D007477:Ions; D011799:Quinazolines; D000077341:Lapatinib