Mueller T C, Lefèvre J P, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3379009 A1, 2017-06-02.
发明人黄志刚,钱学锋,韩伟. "Method for the Synthesis of 1-(2-Fluorophenyl)-6-(4-fluorophenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109981348 B, 授权公告日 2025-07-18.
发明人何建平,徐明华,陈志强. "A Process for Preparing High-Purity 1-(2-Fluorophenyl)-6-(4-fluorophenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113105868 B, 授权公告日 2015-11-04.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2017, 523, 8572-8601.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2022, 415, (2), 7999-8007.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2-Fluorophenyl)-6-(4-fluorophenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid Using HRMS and NMR". Phytochemistry, 2021, 93, (4), 7678-7682.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2016, 796, (11), 5388-5395.