Yamamoto T, Thompson G K, Klinger H. "一种的合成方法" [P]. US Patent, US 10628794 B2, 2019-04-13.
发明人林芳,高志强,唐晓军. "Method for the Synthesis of (E)-4-((2-hydroxy-5-nitrophenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 108328166 A, 授权公告日 2021-06-18.
发明人唐晓军,郭海燕,韩伟. "A Process for Preparing High-Purity (E)-4-((2-hydroxy-5-nitrophenyl)amino)-4-oxobut-2-enoic acid" [P]. 中国发明专利, 专利号 CN 109862178 B, 授权公告日 2018-10-07.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2025, 1052, (2), 7543-7552.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2021, 1618, (2), 1103-1119.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of (E)-4-((2-hydroxy-5-nitrophenyl)amino)-4-oxobut-2-enoic acid Using HRMS and NMR". J. Chromatogr. A, 2020, 205, (10), 3084-3088.