2-Anthracenesulfonic acid, 4-((4-(acetylethylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxo-, monosodium salt 2-Anthraquinonesulfonic acid, 4-((4-(acetylethylamino)phenyl)amino)-1-amino-, sodium salt 71278-40-5