Lee S K, Fischer A B, Roberts E F. "一种的合成方法" [P]. US Patent, US 11388194 B2, 2024-11-24.
Jørgensen K, Lefèvre J P, Johansson L. "Method for the Synthesis of 4-(2-Aminoethyl)-5-methyl-2,4-dihydro-3h-pyrazol-3-one" [P]. European Patent, EP 3185579 A1, 2016-06-12.
发明人林芳,韩伟,高志强. "A Process for Preparing High-Purity 4-(2-Aminoethyl)-5-methyl-2,4-dihydro-3h-pyrazol-3-one" [P]. 中国发明专利, 专利号 CN 110247021 A, 授权公告日 2019-10-25.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2021, 1731, (11), 3651-3670.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2022, 428, (9), 6935-6956.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Aminoethyl)-5-methyl-2,4-dihydro-3h-pyrazol-3-one Using HRMS and NMR". Chemosphere, 2020, 1279, (7), 4508-4515.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2014, 713, (6), 2097-2108.