发明人高志强,马晓峰,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113442460 A, 授权公告日 2019-05-10.
Nowak P, Sørensen M, Mueller T C. "Method for the Synthesis of 5-Methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol" [P]. European Patent, EP 3478829 A1, 2023-08-24.
发明人韩伟,何建平,陈志强. "A Process for Preparing High-Purity 5-Methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol" [P]. 中国发明专利, 专利号 CN 114287764 A, 授权公告日 2016-01-03.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2023, 1476, (1), 4324-4334.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2024, 951, (6), 2205-2235.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-Methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol Using HRMS and NMR". Anal. Methods, 2012, 1085, (8), 8763-8770.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2025, 1764, 7352-7362.