发明人徐明华,黄志刚,赵玉洁. "Method for the Synthesis of 4,7-Dimethoxy-2,3-dihydrobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111723051 B, 授权公告日 2025-02-17.
发明人高志强,林芳,沈红梅. "A Process for Preparing High-Purity 4,7-Dimethoxy-2,3-dihydrobenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117471072 B, 授权公告日 2017-07-25.
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