Thompson G K, Roberts E F, Kumar R. "一种的合成方法" [P]. US Patent, US 10542594 B2, 2023-12-11.
Thompson G K, Chen K W, Mueller T. "Method for the Synthesis of 1H-pyrazolo[3,4-d]pyrimidine-6-carbonitrile" [P]. US Patent, US 10488501 B2, 2025-05-24.
发明人徐明华,李文辉,陈志强. "A Process for Preparing High-Purity 1H-pyrazolo[3,4-d]pyrimidine-6-carbonitrile" [P]. 中国发明专利, 专利号 CN 108226813 A, 授权公告日 2019-11-19.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2011, 472, (4), 9746-9751.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2025, 823, 6601-6628.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 1H-pyrazolo[3,4-d]pyrimidine-6-carbonitrile Using HRMS and NMR". J. Agric. Food Chem., 2024, 1422, 3125-3134.