Park J H, Thompson G K, Chen K W. "一种的合成方法" [P]. US Patent, US 9398570 B2, 2015-02-08.
Nowak P, Schröder R, Nielsen H. "Method for the Synthesis of 5,7-Dichloro-2-(methylthio)pyrido[2,3-d]pyrimidine" [P]. European Patent, EP 3933390 A1, 2021-08-05.
发明人高志强,何建平,张德明. "A Process for Preparing High-Purity 5,7-Dichloro-2-(methylthio)pyrido[2,3-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 114810043 A, 授权公告日 2018-08-18.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2023, 1436, 104-116.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2019, 2010, 1952-1980.