Mueller T, Lee S K, Hughes D C. "一种的合成方法" [P]. US Patent, US 9268399 B2, 2015-10-08.
发明人杨光,朱建伟,马晓峰. "Method for the Synthesis of 2-Ethylpyrido[3,4-d]pyrimidin-4(1H)-one" [P]. 中国发明专利, 专利号 CN 108895868 A, 授权公告日 2019-10-18.
发明人刘建华,林芳,杨光. "A Process for Preparing High-Purity 2-Ethylpyrido[3,4-d]pyrimidin-4(1H)-one" [P]. 中国发明专利, 专利号 CN 111848842 A, 授权公告日 2015-06-15.
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". Talanta, 2019, 1747, (8), 370-400.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2013, 1981, (6), 6233-6254.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethylpyrido[3,4-d]pyrimidin-4(1H)-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2021, 1447, 4114-4132.