发明人刘建华,钱学锋,冯建国. "一种4-(2-hydroxyethyl)pyrrolidin-2-one的合成方法" [P]. 中国发明专利, 专利号 CN 111400666 A, 授权公告日 2019-05-09.
发明人胡光,徐明华,郑宇鹏. "Method for the Synthesis of 4-(2-hydroxyethyl)pyrrolidin-2-one" [P]. 中国发明专利, 专利号 CN 112943689 A, 授权公告日 2021-12-03.
发明人马晓峰,陈志强,林芳. "A Process for Preparing High-Purity 4-(2-hydroxyethyl)pyrrolidin-2-one" [P]. 中国发明专利, 专利号 CN 113629664 B, 授权公告日 2023-08-08.
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