Björnsson E, Nielsen H, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3978184 A1, 2016-11-08.
Lefèvre J P, Sørensen M, Nielsen H. "Method for the Synthesis of N1,4-Dimethylbenzene-1,2-diamine" [P]. European Patent, EP 3062348 A1, 2020-04-13.
Stevens L M, Lee S K, Park J H. "A Process for Preparing High-Purity N1,4-Dimethylbenzene-1,2-diamine" [P]. US Patent, US 9266521 B2, 2017-06-11.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2011, 1902, (2), 39-67.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2010, 1998, 8131-8144.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of N1,4-Dimethylbenzene-1,2-diamine Using HRMS and NMR". Molecules, 2019, 614, 9826-9841.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2010, 1179, (1), 4689-4693.