发明人王建平,刘建华,孙丽萍. "Method for the Synthesis of (2S)-rel-2-Azetidinecarbonitrile, ethanedioate (2:1)" [P]. 中国发明专利, 专利号 CN 113687738 B, 授权公告日 2019-10-28.
发明人林芳,唐晓军,朱建伟. "A Process for Preparing High-Purity (2S)-rel-2-Azetidinecarbonitrile, ethanedioate (2:1)" [P]. 中国发明专利, 专利号 CN 110047442 B, 授权公告日 2017-11-11.
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