Schröder R, Rossi M, Martínez F. "Method for the Synthesis of 8-(5-Ethylpyridin-2-yl)-2-methyl-6-(piperidin-1-yl)-1H-purine" [P]. European Patent, EP 3864814 A1, 2018-04-11.
Fischer A B, Hughes D C, Davis P L. "A Process for Preparing High-Purity 8-(5-Ethylpyridin-2-yl)-2-methyl-6-(piperidin-1-yl)-1H-purine" [P]. US Patent, US 9009368 B2, 2016-01-27.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2014, 299, (4), 1087-1117.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2023, 1640, 5294-5297.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 8-(5-Ethylpyridin-2-yl)-2-methyl-6-(piperidin-1-yl)-1H-purine Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2018, 1034, (7), 1194-1204.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2013, 1347, 2382-2397.