申请人:Halama Ales
公开号:US20110034692A1
公开(公告)日:2011-02-10
The subject-matter of the invention consists in a method of removing specific impurities of montelukast of formula (I), which occur due to chemical instability of the target substance and also contaminate the substance in the preparation process. Further, methods of isolation of specific impurities of montelukast defined by formulae (V-A), (IV-A), (XIIIa-A), (XIIIb-A) and analytic methods used for the control of the production of montelukast in the pharmaceutical quality.
本发明的主题是一种去除蒙特卢卡斯特(化学式(I))的特定杂质的方法,这些杂质由于目标物质的化学不稳定性而产生,并在制备过程中污染物质。此外,本发明还涉及一些隔离蒙特卢卡斯特的特定杂质的方法,这些杂质由式(V-A)、(IV-A)、(XIIIa-A)、(XIIIb-A)定义,并用于控制制药质量中蒙特卢卡斯特生产的分析方法。