Synonyms: Potassium 1-amino-4-(4-(((2,3-dichloroquinoxalin-6-yl)sulphonyl)sulphamoyl)-2,6-(dimethylphenyl))amino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate;2-Anthracenesulfonic acid, 1-amino-4-((4-((((2,3-dichloro-6-quinoxalinyl)sulfonyl)amino)sulfonyl)-2,6-dimethylphenyl)amino)-9,10-dihydro-9,10-dioxo-, monopotassium salt