Schröder R, Jørgensen K, Mueller T C. "一种的合成方法" [P]. European Patent, EP 3137295 A1, 2022-06-04.
发明人韩伟,李文辉,黄志刚. "Method for the Synthesis of 4-((1,3-Dimethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-6-yl)oxy)benzaldehyde" [P]. 中国发明专利, 专利号 CN 114999090 B, 授权公告日 2020-02-17.
发明人罗永刚,唐晓军,冯建国. "A Process for Preparing High-Purity 4-((1,3-Dimethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-6-yl)oxy)benzaldehyde" [P]. 中国发明专利, 专利号 CN 114006002 A, 授权公告日 2025-03-24.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2021, 1028, (9), 1365-1392.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2011, 1086, (6), 5881-5898.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-((1,3-Dimethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-6-yl)oxy)benzaldehyde Using HRMS and NMR". J. Nat. Prod., 2022, 2442, (10), 481-507.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2025, 1129, (11), 4263-4293.