Patel M V, Mueller T, Kumar R. "一种的合成方法" [P]. US Patent, US 9571455 B2, 2016-06-20.
O'Brien P Q, Davis P L, Schröder R. "Method for the Synthesis of 3-Azetidin-3-yl-1H-pyrazolo[3,4-b]pyridinetris(trifluoroacetic acid salt)" [P]. US Patent, US 11408704 B2, 2022-12-18.
Brown S R, Roberts E F, Thompson G K. "A Process for Preparing High-Purity 3-Azetidin-3-yl-1H-pyrazolo[3,4-b]pyridinetris(trifluoroacetic acid salt)" [P]. US Patent, US 11313567 B2, 2023-11-21.
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". J. Agric. Food Chem., 2016, 2215, 5462-5465.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2023, 2123, 4353-4375.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-Azetidin-3-yl-1H-pyrazolo[3,4-b]pyridinetris(trifluoroacetic acid salt) Using HRMS and NMR". J. Pharm. Biomed. Anal., 2015, 1577, 1682-1692.