发明人郭海燕,赵玉洁,孙丽萍. "Method for the Synthesis of N-(2,4-Diamino-6-oxo-1,6-dihydropyrimidin-5-yl)-N-methylformamide" [P]. 中国发明专利, 专利号 CN 117275547 A, 授权公告日 2021-11-07.
发明人杨光,罗永刚,孙丽萍. "A Process for Preparing High-Purity N-(2,4-Diamino-6-oxo-1,6-dihydropyrimidin-5-yl)-N-methylformamide" [P]. 中国发明专利, 专利号 CN 113227697 A, 授权公告日 2017-05-24.
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". Biomed. Chromatogr., 2011, 2398, (2), 9417-9443.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2021, 1326, (1), 6163-6190.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of N-(2,4-Diamino-6-oxo-1,6-dihydropyrimidin-5-yl)-N-methylformamide Using HRMS and NMR". J. Chromatogr. A, 2013, 1360, (4), 2248-2255.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2022, 668, (1), 5569-5581.