发明人何建平,孙丽萍,王建平. "Method for the Synthesis of 4-(3,4-Dimethoxyphenyl)-2-(thiophene-2-amido)thiophene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110349595 A, 授权公告日 2019-11-23.
发明人唐晓军,孙丽萍,郭海燕. "A Process for Preparing High-Purity 4-(3,4-Dimethoxyphenyl)-2-(thiophene-2-amido)thiophene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113339662 A, 授权公告日 2025-10-08.
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