发明人钱学锋,郑宇鹏,马晓峰. "一种3-酮-4-氮杂-5-雄甾烯-17β-羧酸甲酯的合成方法" [P]. 中国发明专利, 专利号 CN 115531843 A, 授权公告日 2023-09-06.
发明人杨光,沈红梅,罗永刚. "Method for the Synthesis of Finasteride Impurity 3-one-4-aza-5-androstene-17β-carboxylate methyl ester" [P]. 中国发明专利, 专利号 CN 113725824 A, 授权公告日 2015-02-09.
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