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发明人赵玉洁,黄志刚,胡光. "Method for the Synthesis of 3-Chloro-2-ethoxy-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 117434491 A, 授权公告日 2022-05-05.
发明人冯建国,马晓峰,赵玉洁. "A Process for Preparing High-Purity 3-Chloro-2-ethoxy-9-methyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 108691677 A, 授权公告日 2020-02-08.
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