发明人张德明,刘建华,郑宇鹏. "Method for the Synthesis of 3-(Benzylamino)-4-((4-nitrophenyl)amino)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 109461647 A, 授权公告日 2016-10-22.
Thompson G K, Klinger H, Fischer A B. "A Process for Preparing High-Purity 3-(Benzylamino)-4-((4-nitrophenyl)amino)-4-oxobutanoic acid" [P]. US Patent, US 10431185 B2, 2017-02-24.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2020, 2055, 280-290.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2015, 1554, 419-429.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 3-(Benzylamino)-4-((4-nitrophenyl)amino)-4-oxobutanoic acid Using HRMS and NMR". Chemosphere, 2018, 1468, 1042-1050.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2024, 968, 2420-2431.