Yamamoto T, Williams B T, Brown S R. "一种的合成方法" [P]. US Patent, US 9176920 B2, 2022-11-23.
Kumar R, Schröder R, Chen K W. "Method for the Synthesis of Ethyl 4-chloropyrido[4,3-d]pyrimidine-2-carboxylate" [P]. US Patent, US 9225114 B2, 2023-03-08.
发明人朱建伟,陈志强,何建平. "A Process for Preparing High-Purity Ethyl 4-chloropyrido[4,3-d]pyrimidine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114827772 A, 授权公告日 2016-11-07.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2016, 1706, (1), 2326-2350.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2025, 1250, (4), 3509-3515.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-chloropyrido[4,3-d]pyrimidine-2-carboxylate Using HRMS and NMR". Anal. Chem., 2016, 2137, (11), 7720-7725.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2015, 2454, (10), 5093-5113.