发明人刘建华,冯建国,张德明. "Method for the Synthesis of (2R,3R)-1-ethyl-2-(4-methoxyphenyl)-6-oxopiperidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115978122 B, 授权公告日 2024-02-12.
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