2-Anthracenesulfonic acid, 1-amino-4-(ethylamino)-9,10-dihydro-9,10-dioxo-, monosodium salt 34824-60-7 EINECS 252-230-8 Sodium 1-amino-4-(ethylamino)-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate