Purification of montelukast

Details Purification of montelukast Purification of montelukast

C - Chemistry, Metallurgy

07

D

C07D 215/18 (2006.01)

Patent

CA 2608369

The present invention provides methods of purifying montelukast, a new isolated impurity of montelukast of formula I, method for its isolation, and method of using montelukast impurity as a reference marker and a reference standard.

La présente invention concerne des méthodes de purification du montélukast, une nouvelle impureté isolée dans le montélukast de formule I, une méthode d'isolement de ladite impureté, et une méthode d~emploi de l'impureté du montélukast au titre de marqueur de référence et d'étalon de référence.

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