tailieunhanh - Spectrophotometric and TLC-densitometric methods for the simultaneous determination of Ezetimibe and Atorvastatin calcium
Three sensitive methods were developed for simultaneous determination of Ezetimibe (EZB) and Atorvastatin calcium (ATVC) in binary mixtures. First derivative (D1 ) spectrophotometry was employed for simultaneous determination of EZB ( nm) and ATVC ( nm) with a mean percentage recovery of ± and ± , respectively. Linearity ranges were – lg mL1 and – lg mL1 , respectively. Isosbestic point (IS) spectrophotometry, in conjunction with second derivative (D2 ) spectrophotometry was employed for analysis of the same mixture. Total concentration was determined at IS, nm and nm over a concentration range of – lg mL1 and – lg mL1 , respectively. | Spectrophotometric and TLC-densitometric methods for the simultaneous determination of Ezetimibe and Atorvastatin calcium
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