发明人马晓峰,唐晓军,林芳. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115965532 A, 授权公告日 2022-07-08.
发明人杨光,郑宇鹏,周伟. "Method for the Synthesis of 5-Mercapto-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione" [P]. 中国发明专利, 专利号 CN 113144006 B, 授权公告日 2020-05-19.
发明人罗永刚,朱建伟,何建平. "A Process for Preparing High-Purity 5-Mercapto-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione" [P]. 中国发明专利, 专利号 CN 115338770 B, 授权公告日 2022-06-14.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2021, 859, (11), 1644-1651.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2020, 847, (3), 1842-1850.