发明人郑宇鹏,唐晓军,郭海燕. "Method for the Synthesis of Methyl 2-{[(1E)-2-{[(ethoxycarbonyl)amino]carbonyl}-3-oxobut-1-en-1-yl]amino}thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113827845 B, 授权公告日 2019-11-14.
发明人钱学锋,朱建伟,罗永刚. "A Process for Preparing High-Purity Methyl 2-{[(1E)-2-{[(ethoxycarbonyl)amino]carbonyl}-3-oxobut-1-en-1-yl]amino}thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 110055416 A, 授权公告日 2024-05-20.
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