Rossi M, Martínez F, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3541854 A1, 2017-12-08.
发明人孙丽萍,钱学锋,朱建伟. "Method for the Synthesis of 4-Chloro-1-(3,5-dimethylphenyl)-1h-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 109472500 A, 授权公告日 2023-12-10.
发明人王建平,郭海燕,钱学锋. "A Process for Preparing High-Purity 4-Chloro-1-(3,5-dimethylphenyl)-1h-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 110163719 A, 授权公告日 2015-11-08.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2015, 401, 9502-9512.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2025, 2236, (3), 3844-3867.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-(3,5-dimethylphenyl)-1h-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". Anal. Chem., 2018, 738, 4864-4886.