发明人杨光,沈红梅,陈志强. "Method for the Synthesis of 6-amino-1,2-dihydropyrazolo[3,4-d]pyrimidin-3-one" [P]. 中国发明专利, 专利号 CN 115851993 A, 授权公告日 2017-01-20.
发明人王建平,胡光,钱学锋. "A Process for Preparing High-Purity 6-amino-1,2-dihydropyrazolo[3,4-d]pyrimidin-3-one" [P]. 中国发明专利, 专利号 CN 113668247 A, 授权公告日 2024-03-22.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2011, 1362, (12), 2698-2712.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2020, 868, (12), 575-599.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 6-amino-1,2-dihydropyrazolo[3,4-d]pyrimidin-3-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 1132, (1), 7836-7865.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2023, 2300, 7286-7315.