2-Anthracenesulfonic acid, 9,10-dihydro-1,5-dihydroxy-4,8-bis(methylamino)-9,10-dioxo-, monosodium salt 6370-91-8 C.I. 63315 EINECS 228-891-3 Sodium 9,10-dihydro-1,5-dihydroxy-4,8-bis(methylamino)-9,10-dioxoanthracene-2-sulphonate