90333-32-7 1-Anthracenesulfonic acid,4,4'-[(9,10-dihydro-5,8-dihydroxy-9,10-dioxo-1,4-anthracenediyl)diimino]bis[9,10-dihydro-9,10-dioxo-, disodium salt
90333-19-0 2-Naphthalenesulfonic acid,7-amino-4-hydroxy-8-[(5-hydroxy-7-sulfo-2-naphthalenyl)azo]-,dipotassium salt