发明人何建平,罗永刚,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108517455 A, 授权公告日 2016-05-06.
Davis P L, Roberts E F, Mueller T. "Method for the Synthesis of 2-((3-Ethyl-4-methylphenyl)amino)-1H-purin-6(9H)-one" [P]. US Patent, US 9208291 B2, 2023-10-02.
发明人孙丽萍,沈红梅,马晓峰. "A Process for Preparing High-Purity 2-((3-Ethyl-4-methylphenyl)amino)-1H-purin-6(9H)-one" [P]. 中国发明专利, 专利号 CN 108194825 B, 授权公告日 2024-10-15.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2016, 1625, (7), 9843-9869.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2011, 447, (12), 7795-7822.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 2-((3-Ethyl-4-methylphenyl)amino)-1H-purin-6(9H)-one Using HRMS and NMR". J. Chromatogr. A, 2018, 2375, (6), 6150-6163.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2013, 1405, (1), 5247-5265.