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190078-45-6

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Identification, synthesis and characterization of impurities of Montelukast sodium
Montelukast sodium is a selective leukotriene receptor antagonist which inhibits cysteinyl leukotriene CysLT1 receptor. Various synthesis of Montelukast is published. During laboratory optimization and later in bulk synthesis formation of various impurities was detected. Besides, pharma Europa draft mention nine process related impurities. However, the method of preparation of most of these impurities is not available in literature. Also, different route of synthesis will have different impurity profile and those process related impurities are not covered in pharmacopeias. In this study we report the synthesis of possible process impurities, including seven impurities (A-H) mentioned in pharma Europa.
Sunil Kumar,Anjaneyulu,Hima Bindu
p. 4536 - 4546
(2012/02/04)

SALT OF MONTELUKAST WITH TERT.-BUTYLAMINE
The invention relates to a novel salt of montelukast with tert-butylamine and its use in the process for the preparation of highly pure free montelukast acid and/or pharmaceutically acceptable salts thereof, in particular montelukast sodium.
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Page/Page column 26

(2008/06/13)

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Chemical Properties

Melting Point: 92-95°C
Solubility:Chloroform (Slightly), Methanol (Slightly), Water (Slightly)
Storage Temp.:Refrigerator
PSA: 98.55000
LogP: 7.61330

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