Roberts E F, Thompson G K, Park J H. "一种的合成方法" [P]. US Patent, US 10267669 B2, 2016-08-14.
发明人周伟,李文辉,马晓峰. "Method for the Synthesis of 2-chloro-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 109755925 B, 授权公告日 2018-12-03.
发明人王建平,马晓峰,刘建华. "A Process for Preparing High-Purity 2-chloro-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 111574973 B, 授权公告日 2020-01-13.
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". Rapid Commun. Mass Spectrom., 2016, 2193, 1022-1048.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2013, 2321, (3), 4610-4630.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 2-chloro-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one Using HRMS and NMR". Phytochemistry, 2019, 1578, 3569-3574.