发明人李文辉,张德明,何建平. "Method for the Synthesis of (2E)-4-[(2-Methoxyphenyl)amino]-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 113503411 A, 授权公告日 2025-10-02.
发明人徐明华,周伟,黄志刚. "A Process for Preparing High-Purity (2E)-4-[(2-Methoxyphenyl)amino]-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 113362158 B, 授权公告日 2025-08-21.
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