发明人高志强,罗永刚,刘建华. "Method for the Synthesis of 4-((2,4-Dimethoxyphenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 112019091 A, 授权公告日 2025-06-26.
发明人徐明华,林芳,钱学锋. "A Process for Preparing High-Purity 4-((2,4-Dimethoxyphenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 114674590 A, 授权公告日 2024-07-24.
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