947370-32-3Relevant articles and documents
PROCESS FOR PREPARING MONTELUKAST SODIUM CONTAINING CONTROLLED LEVELS OF IMPURITIES
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Page/Page column 20, (2008/12/07)
The present invention is directed to a process of preparing montelukast or a salt thereof with minimal amounts of impurities, such as a dehydration impurity (compound (VI)) or a cyclic ether impurity (compound (VIII)).
NOVEL POLYMORPHS OF MONTELUKAST AMMONIUM SALTS AND PROCESSES FOR PREPARATION THEREFOR
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Page/Page column 29, (2008/06/13)
Novel crystalline forms I, II, III, IV, V, VI, VII, VIII, IX, and X of montelukast ammonium salts are provided, and novel methods of making these forms are disclosed