发明人孙丽萍,陈志强,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114136795 A, 授权公告日 2022-10-19.
Björnsson E, Johansson L, Kowalski A. "Method for the Synthesis of 7-Chloro-2-(4-chlorobutyl)-2H-pyrazolo[4,3-d]pyrimidine" [P]. European Patent, EP 3289851 A1, 2019-05-18.
发明人周伟,朱建伟,高志强. "A Process for Preparing High-Purity 7-Chloro-2-(4-chlorobutyl)-2H-pyrazolo[4,3-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 114320527 B, 授权公告日 2017-04-13.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2018, 1389, 900-927.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2025, 2070, 122-149.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 7-Chloro-2-(4-chlorobutyl)-2H-pyrazolo[4,3-d]pyrimidine Using HRMS and NMR". Food Chem., 2014, 2114, 918-927.