Johnson M A, Davis P L, Klinger H. "一种的合成方法" [P]. US Patent, US 9860049 B2, 2016-10-07.
Mueller T, Anderson J P, Klinger H. "Method for the Synthesis of 7-Methyl-2-(methylthio)-3H-purin-6(7H)-one" [P]. US Patent, US 11452964 B2, 2018-10-07.
发明人周伟,马晓峰,韩伟. "A Process for Preparing High-Purity 7-Methyl-2-(methylthio)-3H-purin-6(7H)-one" [P]. 中国发明专利, 专利号 CN 111469931 A, 授权公告日 2017-02-19.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2015, 118, (6), 6366-6383.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2011, 1496, 9187-9202.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 7-Methyl-2-(methylthio)-3H-purin-6(7H)-one Using HRMS and NMR". J. Nat. Prod., 2014, 1599, 6714-6732.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2023, 1427, (9), 1142-1165.