发明人冯建国,徐明华,孙丽萍. "Method for the Synthesis of Ethyl 7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112462332 A, 授权公告日 2024-10-15.
发明人陈志强,杨光,冯建国. "A Process for Preparing High-Purity Ethyl 7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111263366 B, 授权公告日 2019-06-15.
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