发明人黄志刚,李文辉,高志强. "一种6,8-二氟-7-羟基-2-氧代-2H-苯并吡喃-3-甲酸的合成方法" [P]. 中国发明专利, 专利号 CN 117506889 A, 授权公告日 2024-06-13.
发明人郑宇鹏,钱学锋,孙丽萍. "Method for the Synthesis of 6,8-Difluoro-7-hydroxy-2-oxo-2H-chromene-3-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 110501160 A, 授权公告日 2018-01-13.
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