发明人王建平,冯建国,韩伟. "Method for the Synthesis of (E)-4-(2-(2-nitrophenyl)hydrazinyl)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 114534385 A, 授权公告日 2015-11-21.
发明人马晓峰,杨光,林芳. "A Process for Preparing High-Purity (E)-4-(2-(2-nitrophenyl)hydrazinyl)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 108812049 B, 授权公告日 2018-08-08.
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