发明人刘建华,唐晓军,郑宇鹏. "Method for the Synthesis of Tofacitinib Impurity 49" [P]. 中国发明专利, 专利号 CN 110475301 A, 授权公告日 2015-05-01.
发明人罗永刚,赵玉洁,沈红梅. "A Process for Preparing High-Purity Tofacitinib Impurity 49" [P]. 中国发明专利, 专利号 CN 117568599 B, 授权公告日 2023-01-03.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of 托法替布杂质49 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2016, 2255, (12), 368-375.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 托法替布杂质49 as an Impurity". J. Nat. Prod., 2018, 1266, 1767-1776.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Tofacitinib Impurity 49 Using HRMS and NMR". Sci. Total Environ., 2020, 2064, (2), 9638-9663.