发明人孙丽萍,黄志刚,李文辉. "Method for the Synthesis of 5-Methyl-5H-pyrimido[5,4-c]thieno[2,3-e][1,2]-thiazin-2-amine 6,6-dioxide" [P]. 中国发明专利, 专利号 CN 113284219 B, 授权公告日 2019-08-19.
发明人黄志刚,周伟,徐明华. "A Process for Preparing High-Purity 5-Methyl-5H-pyrimido[5,4-c]thieno[2,3-e][1,2]-thiazin-2-amine 6,6-dioxide" [P]. 中国发明专利, 专利号 CN 115609487 A, 授权公告日 2020-05-28.
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". Chemosphere, 2017, 580, 1936-1964.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2022, 1246, (8), 9306-9313.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 5-Methyl-5H-pyrimido[5,4-c]thieno[2,3-e][1,2]-thiazin-2-amine 6,6-dioxide Using HRMS and NMR". Anal. Chem., 2014, 2039, (2), 3965-3987.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2019, 2200, (2), 4403-4421.