发明人黄志刚,罗永刚,张德明. "Method for the Synthesis of 1H-Pyrazolo[3,4-d]pyrimidin-4-ol" [P]. 中国发明专利, 专利号 CN 113744964 B, 授权公告日 2021-05-05.
Martínez F, Kowalski A, Sørensen M. "A Process for Preparing High-Purity 1H-Pyrazolo[3,4-d]pyrimidin-4-ol" [P]. European Patent, EP 3552632 A1, 2021-04-14.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2022, 2109, 2475-2505.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2016, 907, (6), 5942-5967.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 1H-Pyrazolo[3,4-d]pyrimidin-4-ol Using HRMS and NMR". J. Chromatogr. A, 2012, 991, 5174-5183.