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1. IN9336/DELNP/2007 - PURIFICATION OF MONTELUKAST

Office India
Application Number 9336/DELNP/2007
Application Date 04.12.2007
Publication Number 9336/DELNP/2007
Publication Date 11.01.2008
Publication Kind A
IPC
[IPC code unknown for C07D 21/18]
C07D 21/18
Applicants TEVA PHARMACEUTICALS INDUSTRIES LTD.
Inventors GRETA STERIMBAUM
EVGENY SHAPIRO
KOBI CHEN
Priority Data 60/697,000 05.07.2005 US
Title
(EN) PURIFICATION OF MONTELUKAST
Abstract
(EN)
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.