Johnson M A, Mueller T, Roberts E F. "一种的合成方法" [P]. US Patent, US 9548189 B2, 2017-09-16.
发明人沈红梅,徐明华,高志强. "Method for the Synthesis of 4-Chloro-1-(3,4-difluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 115843947 B, 授权公告日 2018-02-06.
发明人黄志刚,胡光,唐晓军. "A Process for Preparing High-Purity 4-Chloro-1-(3,4-difluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 112770826 A, 授权公告日 2024-12-04.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2024, 2309, 2701-2707.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2012, 2020, 3963-3989.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-(3,4-difluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". J. Agric. Food Chem., 2019, 1584, (6), 2372-2390.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2018, 895, 4737-4760.