发明人马晓峰,高志强,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111297052 A, 授权公告日 2021-07-20.
Lefèvre J P, Rossi M, Björnsson E. "Method for the Synthesis of Ethyl 8-hydroxypyrido[3,2-d]pyrimidine-7-carboxylate" [P]. European Patent, EP 3904535 A1, 2016-05-17.
发明人罗永刚,冯建国,杨光. "A Process for Preparing High-Purity Ethyl 8-hydroxypyrido[3,2-d]pyrimidine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 114811859 A, 授权公告日 2016-01-09.
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". J. Nat. Prod., 2021, 765, (12), 4762-4784.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2014, 1295, 7329-7335.