发明人高志强,郭海燕,刘建华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110648633 A, 授权公告日 2022-01-10.
发明人胡光,罗永刚,沈红梅. "Method for the Synthesis of 1H-pyrazolo[3,4-d]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117366915 B, 授权公告日 2024-09-28.
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". J. Nat. Prod., 2025, 2241, 7849-7860.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2023, 885, 4794-4817.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 1H-pyrazolo[3,4-d]pyrimidine-6-carboxylic acid Using HRMS and NMR". Talanta, 2016, 677, 2289-2294.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2012, 1044, (6), 7517-7546.