发明人赵玉洁,郭海燕,李文辉. "Method for the Synthesis of Ethyl 2-(3-(2-(2-(2,4-dichlorophenoxy)acetyl)hydrazono)-2-oxoindolin-1-yl)acetate" [P]. 中国发明专利, 专利号 CN 111614157 A, 授权公告日 2025-03-14.
发明人罗永刚,林芳,朱建伟. "A Process for Preparing High-Purity Ethyl 2-(3-(2-(2-(2,4-dichlorophenoxy)acetyl)hydrazono)-2-oxoindolin-1-yl)acetate" [P]. 中国发明专利, 专利号 CN 110572698 A, 授权公告日 2024-07-09.
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". J. Agric. Food Chem., 2022, 2373, 7181-7194.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2020, 270, 3180-3185.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-(3-(2-(2-(2,4-dichlorophenoxy)acetyl)hydrazono)-2-oxoindolin-1-yl)acetate Using HRMS and NMR". J. Chromatogr. A, 2017, 1317, (7), 108-128.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2014, 2211, 8840-8865.