1-Amino-9,10-dihydro-9,10-dioxo-4-o-toluidinoanthracene-2-sulphonic acid 2-Anthracenesulfonic acid, 1-amino-9,10-dihydro-4-((2-methylphenyl)amino)-9,10-dioxo- 34114-36-8 EINECS 251-830-7