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发明人胡光,杨光,张德明. "Method for the Synthesis of 2-Ethyl-3,6-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 115472274 B, 授权公告日 2022-05-07.
发明人周伟,钱学锋,唐晓军. "A Process for Preparing High-Purity 2-Ethyl-3,6-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 115474272 B, 授权公告日 2024-12-14.
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