发明人林芳,钱学锋,何建平. "Method for the Synthesis of methyl 5-methyl-1H-pyrazolo[3,4-c]pyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 108446338 B, 授权公告日 2023-05-05.
发明人李文辉,韩伟,郭海燕. "A Process for Preparing High-Purity methyl 5-methyl-1H-pyrazolo[3,4-c]pyridine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 109582386 A, 授权公告日 2015-02-12.
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". Chemosphere, 2018, 1544, (8), 7961-7977.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2018, 1035, (5), 6316-6331.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of methyl 5-methyl-1H-pyrazolo[3,4-c]pyridine-3-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2017, 1596, (10), 8908-8920.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2016, 1057, 5995-6006.