发明人罗永刚,刘建华,陈志强. "Method for the Synthesis of Ethyl 2-[(cyanoacetyl)amino]thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115617549 B, 授权公告日 2015-06-14.
发明人马晓峰,胡光,周伟. "A Process for Preparing High-Purity Ethyl 2-[(cyanoacetyl)amino]thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115065530 B, 授权公告日 2023-03-03.
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