Björnsson E, Kowalski A, Johansson L. "一种的合成方法" [P]. European Patent, EP 3054084 A1, 2023-10-15.
发明人罗永刚,郭海燕,张德明. "Method for the Synthesis of 4-Chloro-1-(2-methoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 110202351 A, 授权公告日 2024-01-21.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2019, 1041, 6185-6202.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2025, 1438, 1281-1288.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-(2-methoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". Biomed. Chromatogr., 2019, 1849, 9726-9739.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2015, 656, 2598-2613.