Lee S K, Fischer A B, Roberts E F. "一种的合成方法" [P]. US Patent, US 11809744 B2, 2022-03-17.
发明人孙丽萍,刘建华,罗永刚. "Method for the Synthesis of Ethyl 2-((3-methyl-4-oxo-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-7-yl)thio)acetate" [P]. 中国发明专利, 专利号 CN 109845246 B, 授权公告日 2024-03-14.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2010, 472, (3), 8897-8908.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2018, 673, (1), 4072-4099.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-((3-methyl-4-oxo-4H-[1,3,4]thiadiazolo[2,3-c][1,2,4]triazin-7-yl)thio)acetate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2016, 1278, (1), 9389-9396.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2016, 1232, (1), 8593-8622.