Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2010 Vol: 2 Issue: 5

Isolation of Lansoprazole intermediate impurity resulting in yield improvement

Abstract

The aim of work is to isolate Lansoprazole intermediate impurity resulting into its yield improvement. Lansoprazole is a proton pump inhibitor, generally used in treatment of peptic ulcer. Lansoprazole is synthesized in seven stages. Meta-nitro impurity i.e. (2, 3-dimethyl-5-nitropyridine-N-Oxide) occurs at stage II which is isolated by a very conventional method and elemental analysis is performed by Proton NMR and IR.

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