发明人郭海燕,李文辉,赵玉洁. "Method for the Synthesis of (Z)-4-((2-bromophenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 113831330 B, 授权公告日 2017-02-18.
发明人孙丽萍,罗永刚,王建平. "A Process for Preparing High-Purity (Z)-4-((2-bromophenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 117497489 B, 授权公告日 2019-07-17.
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