发明人孙丽萍,刘建华,王建平. "Method for the Synthesis of 5h,6h,7h-Pyrazolo[3,2-b][1,3]oxazin-2-ylmethanol" [P]. 中国发明专利, 专利号 CN 113985551 B, 授权公告日 2018-06-15.
Kowalski A, Nielsen H, Schröder R. "A Process for Preparing High-Purity 5h,6h,7h-Pyrazolo[3,2-b][1,3]oxazin-2-ylmethanol" [P]. European Patent, EP 3531570 A1, 2018-03-19.
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". Anal. Chim. Acta, 2013, 1737, (3), 409-425.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2016, 1265, (2), 8394-8420.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 5h,6h,7h-Pyrazolo[3,2-b][1,3]oxazin-2-ylmethanol Using HRMS and NMR". J. Chromatogr. A, 2017, 2129, (12), 4357-4363.