(2S,5Z)-2-amino-7-(ethanimidoylamino)-2-methylhept-5-enoic acid is crystallized as an anhydrous, stoichiometric 1.5 HCl salt and a scaleable crystallization method is disclosed. The salt form was characterized and the absolute configuration of the chiral center was confirmed as “S”. (2S,5Z)-2-amino-7-(ethanimidoylamino)-2-methylhept-5-enoic acid was high melting and appears acceptably non-hygroscopic for use in a pharmaceutical composition.
(2S,5Z)-2-
氨基-7-(
乙脒酰
氨基)-2-甲基庚-5-烯酸以无
水、1.5 HCl 定量盐的形式结晶,并公开了一种可扩展的结晶方法。对盐的形式进行了表征,并确认手性中心的绝对构型为 "S"。(2S,5Z)-2-
氨基-7-(
乙脒酰
氨基)-2-甲基庚-5-烯酸具有高熔点,并且在药物组合物中具有可接受的非吸湿性。