发明人刘建华,郭海燕,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113164071 A, 授权公告日 2022-06-02.
发明人刘建华,林芳,何建平. "Method for the Synthesis of 8-Bromo-6-chloro-2-methylpyrido[3,4-d]pyrimidin-4(1H)-one" [P]. 中国发明专利, 专利号 CN 116915246 B, 授权公告日 2019-01-15.
发明人钱学锋,胡光,周伟. "A Process for Preparing High-Purity 8-Bromo-6-chloro-2-methylpyrido[3,4-d]pyrimidin-4(1H)-one" [P]. 中国发明专利, 专利号 CN 117492918 A, 授权公告日 2019-05-12.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2023, 1865, 9856-9867.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2013, 1981, (5), 5640-5669.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 8-Bromo-6-chloro-2-methylpyrido[3,4-d]pyrimidin-4(1H)-one Using HRMS and NMR". Phytochemistry, 2019, 2107, (2), 7906-7915.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2022, 1002, (7), 544-548.