Thompson G K, Brown S R, Yamamoto T. "Method for the Synthesis of N4-(4-Fluorophenyl)-N6-(3-methoxypropyl)-1-methyl-1H-pyrazolo[3,4-d]pyrimidine-4,6-diamine" [P]. US Patent, US 11871067 B2, 2023-04-07.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2016, 1141, (2), 756-761.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2010, 1594, (8), 2074-2099.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of N4-(4-Fluorophenyl)-N6-(3-methoxypropyl)-1-methyl-1H-pyrazolo[3,4-d]pyrimidine-4,6-diamine Using HRMS and NMR". Anal. Chem., 2012, 1177, 4550-4573.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2011, 828, (12), 7248-7268.