发明人高志强,胡光,周伟. "Method for the Synthesis of 5-Nitro-1-phenyl-1H-pyrazolo[3,4-b]pyridine-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 113680833 A, 授权公告日 2017-05-21.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2010, 568, 3275-3286.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2011, 585, (5), 9788-9817.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 5-Nitro-1-phenyl-1H-pyrazolo[3,4-b]pyridine-3-carbaldehyde Using HRMS and NMR". J. Agric. Food Chem., 2023, 499, 3470-3476.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2014, 809, 52-55.