发明人刘建华,李文辉,郑宇鹏. "Method for the Synthesis of 4-Chloro-1-(3-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 117372839 B, 授权公告日 2015-03-05.
Björnsson E, Lefèvre J P, Nielsen H. "A Process for Preparing High-Purity 4-Chloro-1-(3-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. European Patent, EP 3260484 A1, 2017-06-06.
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". J. Sep. Sci., 2015, 1971, (11), 4724-4747.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 1169, (9), 5375-5392.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-(3-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". J. Nat. Prod., 2011, 1893, 4535-4550.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2020, 1467, 1918-1926.