Lefèvre J P, Schröder R, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3330872 A1, 2025-08-01.
Mueller T C, Nielsen H, Martínez F. "Method for the Synthesis of 1,2-Dihydropyrimido[4,5-d]pyrimidin-4-amine" [P]. European Patent, EP 3397064 A1, 2016-07-17.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2024, 1931, (12), 2928-2958.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2012, 966, 1658-1686.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 1,2-Dihydropyrimido[4,5-d]pyrimidin-4-amine Using HRMS and NMR". Chromatographia, 2018, 1943, (2), 2042-2064.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2022, 2312, (6), 4178-4205.