发明人刘建华,赵玉洁,孙丽萍. "一种4-溴-3-羟基噻吩-2-羧酸的合成方法" [P]. 中国发明专利, 专利号 CN 113564176 A, 授权公告日 2017-10-04.
发明人马晓峰,郭海燕,郑宇鹏. "Method for the Synthesis of 4-Bromo-3-hydroxythiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116915752 A, 授权公告日 2023-03-24.
发明人韩伟,林芳,郭海燕. "A Process for Preparing High-Purity 4-Bromo-3-hydroxythiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117950548 B, 授权公告日 2016-11-07.
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