An assessment of the impurity profile of finasteride and possible carry-over related substances likely to arise during the synthesis of finasteride is described in this article. Impurities in reaction mass were monitored by HPLC, potential impurities isolated with preparative HPLC and structures were substantiated by 1H NMR, MS and MS-MS. Impurities RRTs were established by HPLC co-injection. Based on the spectral data structure of impurity I and impurity II were characterized as cyclohexyl and phenyl analog of finasteride.
本文描述了对
非那雄胺杂质谱及其合成过程中可能产生的相关物质的评估。反应混合物中的杂质通过高效
液相色谱(HPLC)进行监测,潜在杂质通过制备性HPLC分离,并通过1H NMR、质谱(MS)和串联质谱(MS-MS)确认其结构。杂质的相对保留时间(RRT)通过HPLC共同注射建立。根据光谱数据,杂质I和杂质II的结构被表征为
非那雄胺的环己基和苯基类似物。