发明人杨光,王建平,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115444224 A, 授权公告日 2018-04-27.
发明人钱学锋,罗永刚,张德明. "Method for the Synthesis of 5,7-Dibromo-1H-indazol-3-ol" [P]. 中国发明专利, 专利号 CN 113097867 A, 授权公告日 2020-06-28.
Kowalski A, Lefèvre J P, Nowak P. "A Process for Preparing High-Purity 5,7-Dibromo-1H-indazol-3-ol" [P]. European Patent, EP 3829857 A1, 2016-06-16.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2013, 1268, 9959-9984.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2014, 879, (3), 8429-8459.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5,7-Dibromo-1H-indazol-3-ol Using HRMS and NMR". Anal. Methods, 2011, 1078, (9), 3617-3644.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2017, 1322, 9763-9776.