2-Anthracenesulfonic acid, 4-((4-(acetylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxo- 4-((4-(Acetylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid 6247-34-3 EINECS 228-364-8