发明人何建平,张德明,冯建国. "Method for the Synthesis of Ethyl 4-cyano-5-(2,5-dichlorothiophene-3-carboxamido)-3-methylthiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112229825 B, 授权公告日 2020-08-14.
发明人沈红梅,马晓峰,韩伟. "A Process for Preparing High-Purity Ethyl 4-cyano-5-(2,5-dichlorothiophene-3-carboxamido)-3-methylthiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117646844 B, 授权公告日 2025-08-25.
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