Development and Validation of HPTLC Method for the Estimation of Escitalopram oxalate and Flupentixol Dihydrochloride in Pharmaceutical Formulation

Abstract

A simple, precise, accurate High-performance thin-layer chromatography (HPTLC) method has been developed and validated for the estimation of escitalopram oxalate (ESC) and flupentixol dihydrochloride (FLU) in pharmaceutical formulation. Separation was achieved on an aluminum HPTLC plate coated with a 0.2 mm layer of silica gel 60 F254 with chloroform: methanol 4:6 (v/v) as mobile phase. The densitometry analysis was carried out in absorbance mode at 254 nm. The Rf values of escitalopram and flupentixol were 0.24 and 0.44 respectively. The linearity of the method was achieved in the range 3-7 µg/spot for ESC with correlation coefficient value 0.998 and 0.3-0.7µg/spot for FLU with correlation coefficient value 0.999. The developed method was validated according to ICH guidelines and the results were statistically validated. The limit of detection and quantification for escitalopram oxalate and flupentixol dihydrochloride was found to be 500 ng/spot and 50 ng/spot, 1000 ng/spot, and 100 ng/spot respectively.