发明人郑宇鹏,郭海燕,李文辉. "Method for the Synthesis of O-Desmethyl-cis-tramadol HCl" [P]. 中国发明专利, 专利号 CN 116400046 A, 授权公告日 2021-03-13.
发明人何建平,唐晓军,钱学锋. "A Process for Preparing High-Purity O-Desmethyl-cis-tramadol HCl" [P]. 中国发明专利, 专利号 CN 112905679 A, 授权公告日 2018-12-08.
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