Nowak P, Lefèvre J P, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3558887 A1, 2023-10-10.
Chen K W, Hughes D C, Anderson J P. "Method for the Synthesis of 4-(2-Aminoethyl)-1-methyl-1H-pyrazol-5-amine dihydrochloride" [P]. US Patent, US 10408935 B2, 2015-02-09.
Schröder R, Roberts E F, Kumar R. "A Process for Preparing High-Purity 4-(2-Aminoethyl)-1-methyl-1H-pyrazol-5-amine dihydrochloride" [P]. US Patent, US 10955398 B2, 2017-10-17.
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". Chemosphere, 2024, 2204, 2248-2270.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2016, 122, 8199-8213.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Aminoethyl)-1-methyl-1H-pyrazol-5-amine dihydrochloride Using HRMS and NMR". J. Sep. Sci., 2013, 1937, (2), 8241-8254.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2020, 1208, (6), 7347-7375.