发明人陈志强,杨光,周伟. "Method for the Synthesis of 1-(4-Methoxyphenyl)-3-methyl-6-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110765868 A, 授权公告日 2016-06-07.
发明人罗永刚,孙丽萍,何建平. "A Process for Preparing High-Purity 1-(4-Methoxyphenyl)-3-methyl-6-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116017508 A, 授权公告日 2024-02-27.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2017, 327, (8), 1837-1860.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2024, 1276, (2), 2693-2721.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 1-(4-Methoxyphenyl)-3-methyl-6-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid Using HRMS and NMR". Anal. Chem., 2014, 2106, (9), 9770-9775.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2013, 87, (10), 5308-5331.