发明人陈志强,沈红梅,李文辉. "Method for the Synthesis of 21018-62-2
5-Ethyl-2,4-dimethyl-2H-pyrazol-3-ylamine
7140AD
C7H13N3" [P]. 中国发明专利, 专利号 CN 112012718 B, 授权公告日 2019-08-18.
发明人周伟,沈红梅,韩伟. "A Process for Preparing High-Purity 21018-62-2
5-Ethyl-2,4-dimethyl-2H-pyrazol-3-ylamine
7140AD
C7H13N3" [P]. 中国发明专利, 专利号 CN 116756744 A, 授权公告日 2018-04-23.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of 3-Ethyl-1,4-dimethyl-1H-pyrazol-5-amine in Pharmaceutical Formulations". Talanta, 2011, 860, 3571-3586.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-Ethyl-1,4-dimethyl-1H-pyrazol-5-amine as an Impurity". Anal. Chim. Acta, 2015, 2098, 5059-5077.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 21018-62-2
5-Ethyl-2,4-dimethyl-2H-pyrazol-3-ylamine
7140AD
C7H13N3 Using HRMS and NMR". J. Sep. Sci., 2021, 1773, (7), 9769-9773.