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发明人李文辉,王建平,唐晓军. "Method for the Synthesis of 2-(Diethylamino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 111145574 B, 授权公告日 2021-03-07.
发明人杨光,刘建华,李文辉. "A Process for Preparing High-Purity 2-(Diethylamino)-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 113767073 A, 授权公告日 2023-05-10.
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