发明人孙丽萍,罗永刚,王建平. "一种3,4-二氟-5-羟基苯甲酸乙酯的合成方法" [P]. 中国发明专利, 专利号 CN 113016439 A, 授权公告日 2023-04-14.
发明人李文辉,刘建华,马晓峰. "Method for the Synthesis of Ethyl 3,4-difluoro-5-hydroxybenzoate" [P]. 中国发明专利, 专利号 CN 114625252 B, 授权公告日 2025-07-17.
发明人张德明,黄志刚,高志强. "A Process for Preparing High-Purity Ethyl 3,4-difluoro-5-hydroxybenzoate" [P]. 中国发明专利, 专利号 CN 111601204 A, 授权公告日 2016-08-19.
参考文献 Literature
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