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发明人王建平,沈红梅,胡光. "Method for the Synthesis of 9-Methyl-3,4-dihydro-2H-pyrido[1,2-a]pyrimidin-2-one" [P]. 中国发明专利, 专利号 CN 116664454 A, 授权公告日 2024-01-08.
发明人韩伟,刘建华,孙丽萍. "A Process for Preparing High-Purity 9-Methyl-3,4-dihydro-2H-pyrido[1,2-a]pyrimidin-2-one" [P]. 中国发明专利, 专利号 CN 109254044 A, 授权公告日 2023-04-21.
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