发明人王建平,郑宇鹏,杨光. "Method for the Synthesis of (E)-4-{3-[(Ethylanilino)carbonyl]anilino}-4-oxo-2-butenoic acid
3823AF
940506-00-3
C19H18N2O4" [P]. 中国发明专利, 专利号 CN 110762534 A, 授权公告日 2023-11-18.
Johansson L, Lefèvre J P, Jørgensen K. "A Process for Preparing High-Purity (E)-4-{3-[(Ethylanilino)carbonyl]anilino}-4-oxo-2-butenoic acid
3823AF
940506-00-3
C19H18N2O4" [P]. European Patent, EP 3558839 A1, 2021-12-21.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2022, 140, 4070-4077.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2015, 1643, (1), 4910-4914.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of (E)-4-{3-[(Ethylanilino)carbonyl]anilino}-4-oxo-2-butenoic acid
3823AF
940506-00-3
C19H18N2O4 Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 396, 9539-9566.