发明人胡光,刘建华,冯建国. "Method for the Synthesis of N,N'-Bis(4-methoxy-2-methylphenyl)-N,N'-diphenylbenzidine(purifiedbysublimation)" [P]. 中国发明专利, 专利号 CN 109094745 B, 授权公告日 2017-07-12.
发明人张德明,何建平,林芳. "A Process for Preparing High-Purity N,N'-Bis(4-methoxy-2-methylphenyl)-N,N'-diphenylbenzidine(purifiedbysublimation)" [P]. 中国发明专利, 专利号 CN 112527570 A, 授权公告日 2025-10-21.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2024, 1226, 7357-7375.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2021, 2090, (6), 7930-7953.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of N,N'-Bis(4-methoxy-2-methylphenyl)-N,N'-diphenylbenzidine(purifiedbysublimation) Using HRMS and NMR". J. Pharm. Biomed. Anal., 2025, 1156, (2), 706-716.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2015, 307, (3), 7725-7739.