申请人:ESTEVE QUIMICA, S.A.
公开号:EP2072510A1
公开(公告)日:2009-06-24
Polymorph I of azelastine of formula (I), its preparation process which comprises the following steps: a) crystallizing azelastine from a solution of said compound in isobutylmethylketone; b) isolating the polymorph I of azelastine that appears in the prior step; and c) removing the organic solvent from the polymorph I of azelastine thus obtained, and its use as antihistamine.
阿齐拉斯汀的多形态I的化学式(I),其制备过程包括以下步骤:a)从异丁基甲基酮溶液中结晶化阿齐拉斯汀;b)分离出在上一步骤中出现的阿齐拉斯汀的多形态I;c)从所得的阿齐拉斯汀多形态I中去除有机溶剂,并将其用作抗组胺药。