发明人郭海燕,胡光,孙丽萍. "Method for the Synthesis of 4-Chloro-5-methoxy-3-(2,2,2-trifluoroethoxy)thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113475521 A, 授权公告日 2025-12-04.
发明人李文辉,郑宇鹏,罗永刚. "A Process for Preparing High-Purity 4-Chloro-5-methoxy-3-(2,2,2-trifluoroethoxy)thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112667276 A, 授权公告日 2021-04-02.
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