Brown S R, Hughes D C, Fischer A B. "一种的合成方法" [P]. US Patent, US 10669037 B2, 2017-06-05.
Martínez F, Mueller T C, Björnsson E. "Method for the Synthesis of 6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-3-ol" [P]. European Patent, EP 3803185 A1, 2016-12-24.
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". Rapid Commun. Mass Spectrom., 2016, 2037, (11), 1427-1455.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2013, 2024, (12), 1731-1759.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 6,7-Dihydro-5H-pyrazolo[5,1-b][1,3]oxazin-3-ol Using HRMS and NMR". Molecules, 2011, 623, 9885-9889.