发明人李文辉,孙丽萍,郑宇鹏. "Method for the Synthesis of 4-(Ethylamino)butanamide" [P]. 中国发明专利, 专利号 CN 117788901 A, 授权公告日 2020-04-14.
发明人王建平,徐明华,郑宇鹏. "A Process for Preparing High-Purity 4-(Ethylamino)butanamide" [P]. 中国发明专利, 专利号 CN 115086920 B, 授权公告日 2021-04-06.
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