发明人李文辉,马晓峰,沈红梅. "Method for the Synthesis of Tofacitinib Impurity 16" [P]. 中国发明专利, 专利号 CN 115359055 B, 授权公告日 2018-07-26.
Sørensen M, Rossi M, Nowak P. "A Process for Preparing High-Purity Tofacitinib Impurity 16" [P]. European Patent, EP 3589194 A1, 2018-02-14.
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