Martínez F, Kowalski A, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3936385 A1, 2021-12-07.
Klinger H, Roberts E F, Mueller T. "Method for the Synthesis of 7-Bromo-3-methyl-2,3-dihydropyrazolo[5,1-b]oxazole" [P]. US Patent, US 9655841 B2, 2022-11-05.
发明人徐明华,刘建华,何建平. "A Process for Preparing High-Purity 7-Bromo-3-methyl-2,3-dihydropyrazolo[5,1-b]oxazole" [P]. 中国发明专利, 专利号 CN 113905133 A, 授权公告日 2021-02-27.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2011, 2438, (3), 2941-2946.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2018, 1503, 1149-1154.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 7-Bromo-3-methyl-2,3-dihydropyrazolo[5,1-b]oxazole Using HRMS and NMR". Anal. Chim. Acta, 2021, 1881, (5), 6311-6321.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2013, 920, (1), 100-110.