发明人周伟,钱学锋,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117005392 A, 授权公告日 2020-09-28.
Nowak P, Sørensen M, Lefèvre J P. "Method for the Synthesis of 1,2,4,5-Tetraazaspiro[5.5]Undecane-3-thione" [P]. European Patent, EP 3675738 A1, 2016-03-22.
发明人唐晓军,陈志强,王建平. "A Process for Preparing High-Purity 1,2,4,5-Tetraazaspiro[5.5]Undecane-3-thione" [P]. 中国发明专利, 专利号 CN 109424871 A, 授权公告日 2024-04-07.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2021, 1920, (12), 3619-3644.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2018, 245, 2747-2754.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 1,2,4,5-Tetraazaspiro[5.5]Undecane-3-thione Using HRMS and NMR". Food Chem., 2020, 240, (8), 5995-6016.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2021, 1287, (5), 2563-2580.