发明人罗永刚,郑宇鹏,孙丽萍. "Method for the Synthesis of tert-butyl 3-methyl-1H-pyrazolo[3,4-b]pyridine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 116150011 B, 授权公告日 2021-05-18.
发明人赵玉洁,张德明,罗永刚. "A Process for Preparing High-Purity tert-butyl 3-methyl-1H-pyrazolo[3,4-b]pyridine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 113381489 A, 授权公告日 2018-09-21.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2010, 83, (3), 3953-3975.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2018, 1698, 2618-2642.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of tert-butyl 3-methyl-1H-pyrazolo[3,4-b]pyridine-1-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2015, 1530, 7496-7522.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2015, 2401, (10), 7431-7434.