发明人王建平,杨光,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110512546 A, 授权公告日 2015-05-10.
Johansson L, Lefèvre J P, Sørensen M. "Method for the Synthesis of 5-Amino-3-ethyl-1H-pyrazole-1-carboximidamide" [P]. European Patent, EP 3051683 A1, 2022-07-10.
发明人刘建华,韩伟,徐明华. "A Process for Preparing High-Purity 5-Amino-3-ethyl-1H-pyrazole-1-carboximidamide" [P]. 中国发明专利, 专利号 CN 116701631 A, 授权公告日 2023-09-09.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2014, 881, (4), 3299-3326.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2018, 468, (2), 5402-5419.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-3-ethyl-1H-pyrazole-1-carboximidamide Using HRMS and NMR". Biomed. Chromatogr., 2021, 913, 3362-3366.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2020, 2269, (8), 6863-6872.