发明人何建平,刘建华,罗永刚. "Method for the Synthesis of 7-Chloro-3-hydroxybenzo[b]thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109423680 A, 授权公告日 2018-04-14.
发明人赵玉洁,郭海燕,胡光. "A Process for Preparing High-Purity 7-Chloro-3-hydroxybenzo[b]thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117422943 B, 授权公告日 2022-08-06.
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