发明人郑宇鹏,何建平,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114643188 A, 授权公告日 2015-03-17.
发明人沈红梅,钱学锋,冯建国. "Method for the Synthesis of 3-Bromo-2-(trifluoromethyl)-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-4-ol" [P]. 中国发明专利, 专利号 CN 111096148 A, 授权公告日 2025-11-13.
发明人马晓峰,唐晓军,冯建国. "A Process for Preparing High-Purity 3-Bromo-2-(trifluoromethyl)-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-4-ol" [P]. 中国发明专利, 专利号 CN 109076493 B, 授权公告日 2018-06-06.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2018, 1727, 117-127.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2010, 1003, 1514-1544.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 3-Bromo-2-(trifluoromethyl)-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-4-ol Using HRMS and NMR". Environ. Sci. Technol., 2018, 891, 650-673.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2015, 1935, 6757-6777.