Brown S R, Fischer A B, Davis P L. "一种的合成方法" [P]. US Patent, US 10868854 B2, 2015-07-18.
发明人郭海燕,马晓峰,李文辉. "Method for the Synthesis of 1-Ethyl-2-mercapto-5,7-dimethylpyrido[2,3-d]-pyrimidin-4(1H)-one" [P]. 中国发明专利, 专利号 CN 114080562 B, 授权公告日 2017-12-01.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 1657, 2008-2018.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2018, 1476, 7739-7764.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-2-mercapto-5,7-dimethylpyrido[2,3-d]-pyrimidin-4(1H)-one Using HRMS and NMR". Anal. Methods, 2015, 1072, (7), 3768-3784.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2012, 2246, 5207-5213.