Mueller T C, Nielsen H, Nowak P. "一种的合成方法" [P]. European Patent, EP 3897522 A1, 2021-09-07.
Thompson G K, Davis P L, Yamamoto T. "Method for the Synthesis of 4-Ethoxy-1H-imidazo[2,1-b]purine" [P]. US Patent, US 10421430 B2, 2022-05-24.
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". J. Agric. Food Chem., 2013, 1220, 7927-7933.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2016, 714, (4), 1194-1200.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethoxy-1H-imidazo[2,1-b]purine Using HRMS and NMR". Molecules, 2014, 146, (8), 1527-1534.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2019, 1242, (12), 6771-6793.