发明人钱学锋,朱建伟,胡光. "Method for the Synthesis of 5-Bromo-7-chloro-3-methyl-1-benzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109485088 B, 授权公告日 2017-06-03.
发明人黄志刚,赵玉洁,王建平. "A Process for Preparing High-Purity 5-Bromo-7-chloro-3-methyl-1-benzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112269941 B, 授权公告日 2020-10-01.
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