Jørgensen K, Nielsen H, Sørensen M. "一种的合成方法" [P]. European Patent, EP 3818217 A1, 2021-10-02.
Thompson G K, Lee S K, Fischer A B. "Method for the Synthesis of 5-Bromo-1H-pyrazolo[3,4-b]pyridin-3(2H)-one, 97%" [P]. US Patent, US 11381038 B2, 2019-09-13.
Martínez F, Nielsen H, Mueller T C. "A Process for Preparing High-Purity 5-Bromo-1H-pyrazolo[3,4-b]pyridin-3(2H)-one, 97%" [P]. European Patent, EP 3680512 A1, 2022-04-13.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2011, 1750, (11), 237-248.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2019, 1763, (8), 2262-2292.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 5-Bromo-1H-pyrazolo[3,4-b]pyridin-3(2H)-one, 97% Using HRMS and NMR". Talanta, 2019, 1389, 1655-1685.