Davis P L, Anderson J P, Park J H. "Method for the Synthesis of 4,6-Dimethyl-1H-pyrazolo[3,4-b]pyridin-3-amine" [P]. US Patent, US 11497809 B2, 2022-10-20.
发明人孙丽萍,何建平,钱学锋. "A Process for Preparing High-Purity 4,6-Dimethyl-1H-pyrazolo[3,4-b]pyridin-3-amine" [P]. 中国发明专利, 专利号 CN 109143345 B, 授权公告日 2019-01-05.
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". J. Sep. Sci., 2021, 839, (5), 7670-7683.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2013, 264, 5047-5067.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4,6-Dimethyl-1H-pyrazolo[3,4-b]pyridin-3-amine Using HRMS and NMR". Anal. Methods, 2025, 408, (4), 2960-2969.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2015, 702, (1), 3940-3958.