发明人郑宇鹏,杨光,黄志刚. "Method for the Synthesis of 3-[Benzyl-(2-ethoxycarbonyl-ethyl)-amino]-butyric acid ethyl ester" [P]. 中国发明专利, 专利号 CN 110813278 A, 授权公告日 2022-09-26.
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