Park J H, Brown S R, Anderson J P. "一种1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride的合成方法" [P]. US Patent, US 9345061 B2, 2025-07-26.
发明人冯建国,郭海燕,刘建华. "Method for the Synthesis of 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride" [P]. 中国发明专利, 专利号 CN 114415787 B, 授权公告日 2025-05-06.
发明人陈志强,李文辉,孙丽萍. "A Process for Preparing High-Purity 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride" [P]. 中国发明专利, 专利号 CN 109208839 A, 授权公告日 2021-10-11.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2015, 2419, (12), 199-225.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride as an Impurity". Environ. Sci. Technol., 2021, 1429, 8196-8203.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride Using HRMS and NMR". Sci. Total Environ., 2025, 1956, 1415-1421.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-4-amine hydrochloride Profile in Drug Substances According to ICH Guidelines". Molecules, 2025, 2261, 5396-5408.