Schröder R, Jørgensen K, Martínez F. "一种黄体酮杂质N1(非对映异构体混合物)的合成方法" [P]. European Patent, EP 3550755 A1, 2024-07-11.
发明人冯建国,唐晓军,林芳. "Method for the Synthesis of Progesterone Impurity N1(Mixture of Diastereomers)" [P]. 中国发明专利, 专利号 CN 110215850 B, 授权公告日 2022-08-25.
发明人赵玉洁,韩伟,马晓峰. "A Process for Preparing High-Purity Progesterone Impurity N1(Mixture of Diastereomers)" [P]. 中国发明专利, 专利号 CN 113014460 B, 授权公告日 2022-02-04.
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