发明人冯建国,孙丽萍,杨光. "Method for the Synthesis of 3-Ethyl-6-methyl-8-propyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 114846092 B, 授权公告日 2020-02-28.
发明人赵玉洁,罗永刚,钱学锋. "A Process for Preparing High-Purity 3-Ethyl-6-methyl-8-propyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 111793910 A, 授权公告日 2017-05-24.
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