发明人韩伟,唐晓军,沈红梅. "Method for the Synthesis of 6(7)-Dehydro Levonorgestrel Acetate" [P]. 中国发明专利, 专利号 CN 111389918 A, 授权公告日 2019-10-05.
发明人孙丽萍,徐明华,张德明. "A Process for Preparing High-Purity 6(7)-Dehydro Levonorgestrel Acetate" [P]. 中国发明专利, 专利号 CN 110952388 A, 授权公告日 2020-06-12.
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