发明人钱学锋,马晓峰,杨光. "Method for the Synthesis of 2-(Difluoromethyl)pyrido[3,4-d]pyrimidin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 112156291 B, 授权公告日 2024-02-17.
发明人黄志刚,高志强,罗永刚. "A Process for Preparing High-Purity 2-(Difluoromethyl)pyrido[3,4-d]pyrimidin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 108404212 A, 授权公告日 2021-12-07.
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