发明人韩伟,黄志刚,冯建国. "Method for the Synthesis of (7-Bromo-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)methyl 2-(methylthio)nicotinate" [P]. 中国发明专利, 专利号 CN 112884701 B, 授权公告日 2022-07-12.
发明人马晓峰,钱学锋,张德明. "A Process for Preparing High-Purity (7-Bromo-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)methyl 2-(methylthio)nicotinate" [P]. 中国发明专利, 专利号 CN 115507891 B, 授权公告日 2021-07-25.
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