发明人孙丽萍,高志强,刘建华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114901819 A, 授权公告日 2019-03-16.
发明人冯建国,韩伟,赵玉洁. "Method for the Synthesis of 1-(Tetrahydro-2H-pyran-2-yl)-5-(trifluoromethyl)-1H-indazol-4-ol" [P]. 中国发明专利, 专利号 CN 110759276 A, 授权公告日 2021-01-10.
发明人郭海燕,孙丽萍,郑宇鹏. "A Process for Preparing High-Purity 1-(Tetrahydro-2H-pyran-2-yl)-5-(trifluoromethyl)-1H-indazol-4-ol" [P]. 中国发明专利, 专利号 CN 111436055 A, 授权公告日 2024-01-09.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2019, 2122, (12), 3301-3313.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2012, 2330, (3), 5119-5143.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 1-(Tetrahydro-2H-pyran-2-yl)-5-(trifluoromethyl)-1H-indazol-4-ol Using HRMS and NMR". Anal. Methods, 2011, 169, (10), 4719-4749.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2014, 809, 7540-7546.