发明人冯建国,钱学锋,徐明华. "Method for the Synthesis of 3-Ethoxy-2,4-difluorobenzoic acid" [P]. 中国发明专利, 专利号 CN 114264080 A, 授权公告日 2021-10-21.
发明人徐明华,韩伟,张德明. "A Process for Preparing High-Purity 3-Ethoxy-2,4-difluorobenzoic acid" [P]. 中国发明专利, 专利号 CN 110117737 B, 授权公告日 2017-01-14.
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