发明人孙丽萍,沈红梅,周伟. "Method for the Synthesis of 2-Hydroxy-7-methyl-4h-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 117461249 B, 授权公告日 2019-02-14.
发明人刘建华,李文辉,黄志刚. "A Process for Preparing High-Purity 2-Hydroxy-7-methyl-4h-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 108241902 A, 授权公告日 2018-09-10.
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