发明人何建平,朱建伟,钱学锋. "Method for the Synthesis of 3-Chlorothieno[2,3-b]thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116913957 B, 授权公告日 2022-11-07.
发明人罗永刚,胡光,刘建华. "A Process for Preparing High-Purity 3-Chlorothieno[2,3-b]thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111733032 B, 授权公告日 2024-11-19.
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