Patel M V, Davis P L, Yamamoto T. "一种的合成方法" [P]. US Patent, US 11956425 B2, 2020-11-20.
Anderson J P, Roberts E F, Fischer A B. "Method for the Synthesis of 5-(Methylthio)pyrimido[5,4-e][1,2,4]triazine" [P]. US Patent, US 10049439 B2, 2024-09-07.
发明人杨光,郭海燕,孙丽萍. "A Process for Preparing High-Purity 5-(Methylthio)pyrimido[5,4-e][1,2,4]triazine" [P]. 中国发明专利, 专利号 CN 112357685 B, 授权公告日 2023-08-05.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2014, 1289, 2481-2511.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2018, 2079, (10), 7533-7559.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 5-(Methylthio)pyrimido[5,4-e][1,2,4]triazine Using HRMS and NMR". Chromatographia, 2018, 985, 402-410.