Chen K W, Fischer A B, Patel M V. "一种的合成方法" [P]. US Patent, US 9197621 B2, 2025-04-15.
Kowalski A, Nielsen H, Jørgensen K. "Method for the Synthesis of 1-(3,4-Dimethylphenyl)-4,5,6,7-tetrahydro-1H-indazol-4-amine hydrochloride" [P]. European Patent, EP 3246968 A1, 2023-05-24.
Lee S K, Patel M V, Park J H. "A Process for Preparing High-Purity 1-(3,4-Dimethylphenyl)-4,5,6,7-tetrahydro-1H-indazol-4-amine hydrochloride" [P]. US Patent, US 9604063 B2, 2020-10-01.
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". J. Agric. Food Chem., 2013, 1512, (8), 5448-5465.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2017, 1837, (10), 4008-4037.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 1-(3,4-Dimethylphenyl)-4,5,6,7-tetrahydro-1H-indazol-4-amine hydrochloride Using HRMS and NMR". Anal. Methods, 2016, 1424, 6655-6660.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2018, 524, (4), 6249-6264.