2-Anthracenesulfonicacid, 4,4'-[methylenebis(p-phenyleneimino)]bis[1-amino-9,10-dihydro-9,10-dioxo-(8CI); 2-Anthraquinonesulfonic acid,4,4'-[methylenebis(p-phenyleneimino)]bis[1-amino- (6CI);Bis(1-amino-2-sulfo-4-anthraquinonylamino-p-phenylene)methane
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