O'Brien P Q, Roberts E F, Klinger H. "Method for the Synthesis of 4,4'-(Ethane-1,2-diylbis((2-((4-sulfophenyl)amino)ethyl)azanediyl))dibenzenesulfonic acid" [P]. US Patent, US 11203304 B2, 2016-12-12.
Sørensen M, Nowak P, Nielsen H. "A Process for Preparing High-Purity 4,4'-(Ethane-1,2-diylbis((2-((4-sulfophenyl)amino)ethyl)azanediyl))dibenzenesulfonic acid" [P]. European Patent, EP 3192890 A1, 2017-01-18.
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". Molecules, 2021, 118, (10), 1120-1136.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2015, 1483, 9473-9490.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4,4'-(Ethane-1,2-diylbis((2-((4-sulfophenyl)amino)ethyl)azanediyl))dibenzenesulfonic acid Using HRMS and NMR". Environ. Sci. Technol., 2014, 647, (2), 1492-1503.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2022, 1768, 5833-5843.