发明人孙丽萍,冯建国,李文辉. "Method for the Synthesis of 1-ethyl-4-phenylpiperidine-4-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 111219419 A, 授权公告日 2022-04-18.
发明人刘建华,郑宇鹏,黄志刚. "A Process for Preparing High-Purity 1-ethyl-4-phenylpiperidine-4-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 113778639 B, 授权公告日 2024-02-12.
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