发明人刘建华,黄志刚,李文辉. "一种4,7-二氯-2H-色烯-2-酮的合成方法" [P]. 中国发明专利, 专利号 CN 117860739 A, 授权公告日 2019-06-13.
发明人马晓峰,孙丽萍,沈红梅. "Method for the Synthesis of 4,7-Dichloro-2H-chromen-2-one" [P]. 中国发明专利, 专利号 CN 113891645 B, 授权公告日 2023-05-09.
发明人杨光,林芳,钱学锋. "A Process for Preparing High-Purity 4,7-Dichloro-2H-chromen-2-one" [P]. 中国发明专利, 专利号 CN 116280049 A, 授权公告日 2022-06-16.
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