Mueller T C, Kowalski A, Johansson L. "Method for the Synthesis of 4-((3-(Ethoxycarbonyl)-5-ethylthiophen-2-yl)amino)-4-oxobutanoic acid" [P]. European Patent, EP 3016849 A1, 2023-07-11.
发明人张德明,林芳,徐明华. "A Process for Preparing High-Purity 4-((3-(Ethoxycarbonyl)-5-ethylthiophen-2-yl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 108860300 A, 授权公告日 2016-07-21.
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