发明人郭海燕,唐晓军,李文辉. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115776032 A, 授权公告日 2022-10-07.
发明人高志强,冯建国,徐明华. "Method for the Synthesis of 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 113889650 B, 授权公告日 2015-04-17.
发明人胡光,周伟,钱学锋. "A Process for Preparing High-Purity 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 116543835 B, 授权公告日 2021-04-08.
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". Phytochemistry, 2021, 1618, (4), 5888-5916.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2020, 697, 3946-3976.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one Using HRMS and NMR". J. Pharm. Biomed. Anal., 2012, 1002, (6), 7807-7814.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2023, 2248, (3), 4010-4023.