Kumar R, Klinger H, Brown S R. "一种的合成方法" [P]. US Patent, US 9812074 B2, 2024-01-24.
发明人李文辉,郑宇鹏,冯建国. "Method for the Synthesis of 4H-Pyrazolo[4,3-d]pyrimidin-7-ol" [P]. 中国发明专利, 专利号 CN 116415928 A, 授权公告日 2015-11-04.
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". Anal. Chim. Acta, 2015, 1816, (4), 4643-4652.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2024, 290, (11), 6576-6596.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4H-Pyrazolo[4,3-d]pyrimidin-7-ol Using HRMS and NMR". Chromatographia, 2020, 1491, (3), 8849-8866.