发明人郭海燕,冯建国,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110029987 A, 授权公告日 2020-11-26.
发明人赵玉洁,冯建国,周伟. "Method for the Synthesis of 3,5-Diamino-1-methyl-1H-pyrazole-4-carboxamide" [P]. 中国发明专利, 专利号 CN 108870167 B, 授权公告日 2020-08-15.
Jørgensen K, Schröder R, Johansson L. "A Process for Preparing High-Purity 3,5-Diamino-1-methyl-1H-pyrazole-4-carboxamide" [P]. European Patent, EP 3158731 A1, 2021-03-01.
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". Biomed. Chromatogr., 2015, 1637, (2), 5793-5818.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2023, 456, 1968-1988.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 3,5-Diamino-1-methyl-1H-pyrazole-4-carboxamide Using HRMS and NMR". Chemosphere, 2014, 431, (4), 5399-5424.