A validated RP-HPLC method for the estimation of lapatinib in tablet dosage form using gemcitabine hydrochloride as an internal standard
1Department of Chemistry, Nalanda Degree and P.G. College, Bunder Road, Vijayawada-520 010, India 2Sri Venkateswara College of Pharmacy, Etcherla, Srikakulam, India 3Department of Biotechnology, Vignan University, Vadlamudi-522 213, Guntur, India
R V Nadh Department of Biotechnology, Vignan University, Vadlamudi-522 213, Guntur India E-mail: firstname.lastname@example.org
A simple, selective, rapid, precise and economical reverse-phase high-performance liquid chromatography method has been developed for the determination of lapatinib in tablet using gemcitabine hydrochloride as an internal standard. Chromatography was carried out on an ODS C-18 RP column (4.6 mm i.d. ×250 mm) using a mixture of acetonitrile and water (50:50 v/v) as the mobile phase at a flow rate of 1.0 ml/min. The drug was monitored at 232 nm. The retention times for lapatinib and gemcitabine hydrochloride were found to be 4.25±0.05 and 6.10±0.05 min, respectively. The method produced linear responses in the concentration range of 2-60 μg/ml of lapatinib. The limit of detection and limit of quantitation were 0.265 and 0.884 μg/ml, respectively.