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发明人黄志刚,马晓峰,张德明. "Method for the Synthesis of 6-Chloro-8-methoxy-2H-chromene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115483699 A, 授权公告日 2018-02-28.
发明人冯建国,赵玉洁,孙丽萍. "A Process for Preparing High-Purity 6-Chloro-8-methoxy-2H-chromene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111051203 A, 授权公告日 2019-01-18.
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