发明人沈红梅,胡光,高志强. "Method for the Synthesis of 4-((4'-Nitro-[1,1'-biphenyl]-4-yl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 117921666 B, 授权公告日 2019-08-08.
发明人王建平,林芳,朱建伟. "A Process for Preparing High-Purity 4-((4'-Nitro-[1,1'-biphenyl]-4-yl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 111502596 A, 授权公告日 2023-05-13.
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