发明人徐明华,林芳,王建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110855062 A, 授权公告日 2017-04-26.
发明人郑宇鹏,罗永刚,胡光. "Method for the Synthesis of 5-Ethyl-3-(2-methylhydrazono)indolin-2-one" [P]. 中国发明专利, 专利号 CN 115618261 A, 授权公告日 2022-03-15.
发明人郑宇鹏,杨光,陈志强. "A Process for Preparing High-Purity 5-Ethyl-3-(2-methylhydrazono)indolin-2-one" [P]. 中国发明专利, 专利号 CN 113216706 B, 授权公告日 2017-12-22.
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". Molecules, 2015, 2392, (12), 442-456.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2010, 2117, 7916-7925.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 5-Ethyl-3-(2-methylhydrazono)indolin-2-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2013, 792, (4), 3690-3700.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2012, 878, (6), 3424-3443.