2-Anthracenesulfonic acid, 9,10-dihydro-1,4-dihydroxy-9,10-dioxo-3-(4-sulfophenoxy)- 6486-92-6 9,10-Dihydro-1,4-dihydroxy-9,10-dioxo-3-(4-sulphophenoxy)anthracene-2-sulphonic acid EINECS 229-360-9