发明人张德明,孙丽萍,徐明华. "Method for the Synthesis of (+/-)-4-methyl-4-vinylazetidin-2-one
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4-ethenyl-4-methylazetidin-2-one" [P]. 中国发明专利, 专利号 CN 108635418 A, 授权公告日 2023-04-15.
发明人朱建伟,冯建国,陈志强. "A Process for Preparing High-Purity (+/-)-4-methyl-4-vinylazetidin-2-one
20012-94-6
4-ethenyl-4-methylazetidin-2-one" [P]. 中国发明专利, 专利号 CN 115198347 A, 授权公告日 2017-12-09.
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