Abstract:Two simple and sensitive extractive spectrophotometric methods have been described for the assay of Lansoprazole (LPZ) either in pure form or in pharmaceutical formulations. The methods were based on the formation of ion-pair complex between LPZ and Metanil Yellow (MY) -Method-A and methyl orange (MO)-Method-B, at pH 2.5 has been described. The formed complex were extracted quantitatively into chloroform and measured at 440 nm and 450 nm with MY and MO respectively. Beer's law was obeyed in the concentration r… Show more
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