Nielsen H, Mueller T C, Johansson L. "一种的合成方法" [P]. European Patent, EP 3246111 A1, 2017-10-28.
发明人高志强,李文辉,林芳. "Method for the Synthesis of 1-(2,7-Dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-(thiophen-2-yl)urea" [P]. 中国发明专利, 专利号 CN 111760950 A, 授权公告日 2016-05-02.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2010, 1427, (8), 4071-4074.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2011, 241, (4), 1477-1507.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,7-Dimethyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-(thiophen-2-yl)urea Using HRMS and NMR". Food Chem., 2021, 1256, 6751-6776.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2018, 1453, 8789-8812.