发明人冯建国,朱建伟,王建平. "Method for the Synthesis of 4-Chloro-1-(1-cyclopropylethyl)-1h-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 108228860 B, 授权公告日 2022-06-09.
Lee S K, Schröder R, O'Brien P Q. "A Process for Preparing High-Purity 4-Chloro-1-(1-cyclopropylethyl)-1h-pyrazolo[3,4-d]pyrimidine" [P]. US Patent, US 11562401 B2, 2018-01-19.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2012, 198, (3), 9254-9258.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2011, 542, 1806-1810.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-(1-cyclopropylethyl)-1h-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". J. Chromatogr. A, 2015, 613, 5010-5039.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2017, 1516, 1988-1992.