Nowak P, Nielsen H, Schröder R. "一种的合成方法" [P]. European Patent, EP 3669110 A1, 2015-11-21.
发明人罗永刚,何建平,张德明. "Method for the Synthesis of 6-Amino-3H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 117386479 A, 授权公告日 2017-05-25.
发明人郑宇鹏,郭海燕,孙丽萍. "A Process for Preparing High-Purity 6-Amino-3H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 115549709 B, 授权公告日 2025-10-17.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2015, 1521, 1435-1463.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2020, 1801, 4389-4399.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 6-Amino-3H-pyrazolo[3,4-d]pyrimidin-4(5H)-one Using HRMS and NMR". J. Sep. Sci., 2024, 1775, 8620-8632.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2012, 209, (7), 1616-1619.