Roberts E F, Schröder R, Fischer A B. "Method for the Synthesis of 1-(2,5-Dimethylphenyl)-3-methyl-1h-pyrazol-5-amine hydrochloride" [P]. US Patent, US 9823902 B2, 2020-08-27.
Williams B T, Thompson G K, Park J H. "A Process for Preparing High-Purity 1-(2,5-Dimethylphenyl)-3-methyl-1h-pyrazol-5-amine hydrochloride" [P]. US Patent, US 10913817 B2, 2025-01-17.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2018, 1102, 4883-4909.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2014, 220, 3938-3967.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,5-Dimethylphenyl)-3-methyl-1h-pyrazol-5-amine hydrochloride Using HRMS and NMR". Anal. Chem., 2015, 714, (2), 2215-2235.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2010, 1122, (3), 2571-2587.