发明人郑宇鹏,朱建伟,黄志刚. "Method for the Synthesis of 5-Amino-1-ethyl-3-(methylthio)-1h-pyrazole-4-carbonitrile" [P]. 中国发明专利, 专利号 CN 108797472 B, 授权公告日 2024-06-26.
Lefèvre J P, Sørensen M, Schröder R. "A Process for Preparing High-Purity 5-Amino-1-ethyl-3-(methylthio)-1h-pyrazole-4-carbonitrile" [P]. European Patent, EP 3395522 A1, 2017-04-12.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2011, 1562, (11), 5080-5100.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2025, 1429, (4), 1242-1258.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-1-ethyl-3-(methylthio)-1h-pyrazole-4-carbonitrile Using HRMS and NMR". Biomed. Chromatogr., 2017, 275, (2), 2839-2859.