发明人王建平,唐晓军,韩伟. "Method for the Synthesis of 4-(Difluoromethyl)-3-methyl-1-propyl-1H-pyrazolo[3,4-b]pyridin-6-ol" [P]. 中国发明专利, 专利号 CN 108726317 B, 授权公告日 2024-11-12.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2015, 1427, (6), 1859-1873.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2011, 324, 7113-7142.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-3-methyl-1-propyl-1H-pyrazolo[3,4-b]pyridin-6-ol Using HRMS and NMR". J. Chromatogr. A, 2020, 854, 1736-1764.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2012, 1610, (4), 4974-5004.