发明人王建平,刘建华,胡光. "Method for the Synthesis of 5-Amino-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazole-4-carbonitrile" [P]. 中国发明专利, 专利号 CN 108121895 B, 授权公告日 2023-04-19.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2022, 2372, (11), 9048-9072.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2014, 728, 6926-6939.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-1-(1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazole-4-carbonitrile Using HRMS and NMR". Anal. Chim. Acta, 2011, 890, (10), 8625-8629.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2012, 337, 9802-9809.