发明人郭海燕,徐明华,王建平. "一种3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one的合成方法" [P]. 中国发明专利, 专利号 CN 112584926 A, 授权公告日 2019-05-08.
发明人高志强,陈志强,赵玉洁. "Method for the Synthesis of 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 117328005 A, 授权公告日 2022-05-25.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one in Pharmaceutical Formulations". Sci. Total Environ., 2017, 2225, (7), 8234-8248.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one as an Impurity". J. Chromatogr. A, 2015, 1827, 3327-3346.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one Using HRMS and NMR". Anal. Methods, 2016, 1730, (4), 5509-5538.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 3-(difluoromethyl)-4,5-dihydro-1H-pyrazol-5-one Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2025, 2300, 2569-2599.