发明人王建平,孙丽萍,李文辉. "Method for the Synthesis of (Rac)-Tofacitinib" [P]. 中国发明专利, 专利号 CN 116373662 B, 授权公告日 2021-01-15.
发明人郭海燕,唐晓军,沈红梅. "A Process for Preparing High-Purity (Rac)-Tofacitinib" [P]. 中国发明专利, 专利号 CN 112352890 B, 授权公告日 2022-09-20.
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