发明人黄志刚,周伟,李文辉. "Method for the Synthesis of Tramadol Impurity 1" [P]. 中国发明专利, 专利号 CN 111830368 A, 授权公告日 2024-02-18.
发明人高志强,李文辉,郑宇鹏. "A Process for Preparing High-Purity Tramadol Impurity 1" [P]. 中国发明专利, 专利号 CN 117077216 A, 授权公告日 2025-08-11.
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