发明人黄志刚,唐晓军,何建平. "Method for the Synthesis of Meperidine Impurity 4" [P]. 中国发明专利, 专利号 CN 115423704 A, 授权公告日 2016-11-07.
发明人李文辉,高志强,王建平. "A Process for Preparing High-Purity Meperidine Impurity 4" [P]. 中国发明专利, 专利号 CN 116525959 A, 授权公告日 2023-06-06.
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