发明人徐明华,罗永刚,林芳. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117028430 A, 授权公告日 2021-01-21.
Lefèvre J P, Johansson L, Rossi M. "Method for the Synthesis of 1,7-Dimethylpyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione" [P]. European Patent, EP 3202378 A1, 2025-01-20.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 982, 9203-9208.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2024, 664, (3), 9414-9434.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 1,7-Dimethylpyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione Using HRMS and NMR". Sci. Total Environ., 2012, 465, (9), 2837-2857.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2024, 591, 6332-6338.