Brown S R, Davis P L, Johnson M A. "Method for the Synthesis of 4-Methoxy-N1-methylbenzene-1,2-diamine dihydrochloride" [P]. US Patent, US 10485557 B2, 2019-05-14.
Stevens L M, Park J H, Chen K W. "A Process for Preparing High-Purity 4-Methoxy-N1-methylbenzene-1,2-diamine dihydrochloride" [P]. US Patent, US 11480572 B2, 2024-03-14.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2012, 1963, (5), 9185-9199.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2010, 2344, 4540-4557.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methoxy-N1-methylbenzene-1,2-diamine dihydrochloride Using HRMS and NMR". Anal. Chim. Acta, 2020, 639, (1), 3316-3338.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2017, 1968, (12), 2361-2383.