1-Amino-2-methyl-4-((4-methyl-2-sulfophenyl)amino)anthraquinonesulfonic acid, disodium salt 1324-06-7 Anthracenesulfonic acid, 1-amino-9,10-dihydro-2-methyl-4-((4-methyl-2-sulfophenyl)amino)-9,10-dioxo-, disodium salt