发明人刘建华,马晓峰,冯建国. "Method for the Synthesis of 5-Bromo-3-ethoxybenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108527386 A, 授权公告日 2016-09-08.
发明人黄志刚,徐明华,张德明. "A Process for Preparing High-Purity 5-Bromo-3-ethoxybenzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117223706 B, 授权公告日 2017-01-10.
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