发明人李文辉,陈志强,赵玉洁. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114702214 A, 授权公告日 2017-11-20.
Davis P L, Yamamoto T, Patel M V. "Method for the Synthesis of 5-chloro-7-methyl-1H-pyrazolo[4,3-d]pyrimidine" [P]. US Patent, US 10666909 B2, 2023-01-15.
Johansson L, Sørensen M, Rossi M. "A Process for Preparing High-Purity 5-chloro-7-methyl-1H-pyrazolo[4,3-d]pyrimidine" [P]. European Patent, EP 3817072 A1, 2023-02-24.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2013, 1004, (5), 1790-1807.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2011, 870, 5190-5200.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 5-chloro-7-methyl-1H-pyrazolo[4,3-d]pyrimidine Using HRMS and NMR". Chemosphere, 2012, 953, (2), 7742-7771.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2011, 959, 8332-8353.