[EN] A METHOD FOR THE PREPARATION OF TIZANIDINE HYDROCHLORIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DU CHLORHYDRATE DE TIZANIDINE
申请人:FARMAK A S
公开号:WO2010069280A2
公开(公告)日:2010-06-24
The invention deals with a preparation method of salts of 5-chloro-4-(2-imidazolin-2-yl- amino)-2,l,3-benzothiadiazole (tizanidine) of formula I, especially tizanidine hydrochloride, comprising preparation of a salt of tizanidine of formula I and a carboxylic acid as an intermediate, from which, after acidification with hydrogen chloride, tizanidine hydrochloride is obtained in a high yield and purity.