发明人马晓峰,钱学锋,唐晓军. "Method for the Synthesis of 2,4-Dimethyl-5-oxo-5H-chromeno[3,4-c]pyridine-1-carbonitrile" [P]. 中国发明专利, 专利号 CN 113721726 B, 授权公告日 2017-04-23.
发明人赵玉洁,陈志强,张德明. "A Process for Preparing High-Purity 2,4-Dimethyl-5-oxo-5H-chromeno[3,4-c]pyridine-1-carbonitrile" [P]. 中国发明专利, 专利号 CN 114073868 A, 授权公告日 2019-04-23.
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