((9,10-Dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(4-(1,1-dimethylethyl)benzenesulfonic acid), sodium salt 72749-91-8 Benzenesulfonic acid, ((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis((1,1-dimethylethyl)-, sodium salt