发明人郭海燕,马晓峰,陈志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109989608 A, 授权公告日 2016-07-12.
Yamamoto T, Fischer A B, Klinger H. "Method for the Synthesis of 4-((4-Nitrophenyl)amino)-4-oxobut-2-enoic acid" [P]. US Patent, US 9115339 B2, 2020-04-06.
发明人赵玉洁,冯建国,王建平. "A Process for Preparing High-Purity 4-((4-Nitrophenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 111251881 B, 授权公告日 2016-08-18.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2018, 2193, 3484-3493.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2017, 430, (5), 4012-4019.