Brown S R, Williams B T, Thompson G K. "一种4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine的合成方法" [P]. US Patent, US 10948746 B2, 2021-12-19.
发明人张德明,郑宇鹏,冯建国. "Method for the Synthesis of 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 116978554 B, 授权公告日 2021-02-18.
发明人郭海燕,刘建华,杨光. "A Process for Preparing High-Purity 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 117182737 B, 授权公告日 2025-03-07.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine in Pharmaceutical Formulations". Sci. Total Environ., 2021, 1665, (11), 922-937.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine as an Impurity". Food Chem., 2013, 967, (9), 7239-7249.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". Anal. Methods, 2022, 1551, 3250-3259.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate 4-chloro-1-(4-fluorophenyl)-6-methyl-1H-pyrazolo[3,4-d]pyrimidine Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2015, 1458, 7887-7914.