1005743-14-5Relevant articles and documents
Purification process of montelukast and its amine salts
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Page/Page column 8-9, (2008/06/13)
It comprises a process for the purification of Montelukast, or its salts or its solvates, including any stereoisomer or mixture thereof, which comprises converting Montelukast acid or a solvate thereof, including any stereoisomer or mixtures thereof, into an amine salt selected from the group consisting of cyclohexylamine, tris-(hydroxymethyl)aminomethane, L-(+)-treo-2-amino-1-phenyl-1,3-propanediol, R-(+)-α-methylbenzylamine, and L-(+)-α-phenylglycinol salt, in the presence of an appropriate solvent. It also comprises novel salts of Montelukast, in particular, cyclohexylamine, tris-(hydroxymethyl)aminomethane, L-(+)-treo-2-amino-1-phenyl-1,3-propanediol, R-(+)-α-methylbenzylamine, and L-(+)-α-phenylglycinol salts.