Development and Validation of Analytical Method for the Assay of Lansoprasole In Marketed Tablet Formulation By RP-HPLC

A simple Reverse phase liquid chromatographic method has been developed and subsequently validated for estimation of lansoprazole in tablet dosage form. The separation was carried out using a mobile phase consisting of Methanol and 0.1% OPA (Ortho Phosphoric Acid) in the ratio of 70:30. The column used was C18 and 250 mm length with flow rate of 1.2 ml / min using UV detection at 285nm. The described method was linear over a concentration range of 10-50 μg/ml for the assay of Lansoprazole. The retention time of Lansoprazole was found to be 6.6 min, and all the results of analysis were validated statistically. The results of the study showed that the proposed RP-HPLC method is simple, rapid, precise and accurate, which is useful for the routine determination of Lansoprazole in tablet dosage form and in its pharmaceutical dosage forms.