Schröder R, Rossi M, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3312974 A1, 2019-10-03.
Hughes D C, Lee S K, Mueller T. "Method for the Synthesis of 3-Chloro-2-ethoxy-8-methyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. US Patent, US 10651322 B2, 2018-05-04.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2016, 542, 8324-8344.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2019, 407, (7), 9081-9089.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 3-Chloro-2-ethoxy-8-methyl-4H-pyrido[1,2-a]pyrimidin-4-one Using HRMS and NMR". Anal. Chem., 2020, 993, 4548-4569.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2018, 655, (6), 8234-8241.