发明人朱建伟,徐明华,韩伟. "Method for the Synthesis of 5-Nitro-2,3-dihydrobenzofuran-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113150220 A, 授权公告日 2023-06-13.
发明人冯建国,杨光,黄志刚. "A Process for Preparing High-Purity 5-Nitro-2,3-dihydrobenzofuran-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108195053 A, 授权公告日 2023-12-07.
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