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发明人刘建华,李文辉,何建平. "Method for the Synthesis of Methyl 5-((2-ethoxyphenyl)carbamoyl)-2-(3-methoxybenzamido)-4-methylthiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113271298 B, 授权公告日 2022-01-19.
发明人周伟,钱学锋,张德明. "A Process for Preparing High-Purity Methyl 5-((2-ethoxyphenyl)carbamoyl)-2-(3-methoxybenzamido)-4-methylthiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 108363897 A, 授权公告日 2020-05-06.
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