发明人刘建华,杨光,陈志强. "Method for the Synthesis of Methyl 4-((5-benzyl-3-carbamoyl-4-methylthiophen-2-yl)amino)-4-oxobutanoate" [P]. 中国发明专利, 专利号 CN 115742571 B, 授权公告日 2018-05-09.
发明人刘建华,孙丽萍,徐明华. "A Process for Preparing High-Purity Methyl 4-((5-benzyl-3-carbamoyl-4-methylthiophen-2-yl)amino)-4-oxobutanoate" [P]. 中国发明专利, 专利号 CN 108154020 A, 授权公告日 2019-08-26.
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