发明人周伟,黄志刚,罗永刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110459947 A, 授权公告日 2015-04-02.
发明人马晓峰,徐明华,何建平. "Method for the Synthesis of 4-(6-Hydroxy-1H-indazol-3-yl)benzene-1,3-diol" [P]. 中国发明专利, 专利号 CN 112521991 A, 授权公告日 2018-11-27.
发明人杨光,罗永刚,郑宇鹏. "A Process for Preparing High-Purity 4-(6-Hydroxy-1H-indazol-3-yl)benzene-1,3-diol" [P]. 中国发明专利, 专利号 CN 108977244 A, 授权公告日 2017-07-14.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2010, 746, 3752-3764.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2015, 2021, 3454-3464.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 4-(6-Hydroxy-1H-indazol-3-yl)benzene-1,3-diol Using HRMS and NMR". J. Nat. Prod., 2016, 268, (5), 3614-3630.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2018, 1101, 6633-6646.