6428-20-2 4-[(4-Amino-7-sodiosulfo-1-naphthalenyl)azo]-7-[(2-methyl-1H-indol-3-yl)azo]-1-hydroxy[1,2-azobisnaphthalene]-3,6-disulfonic acid disodium salt
6428-21-3 6-[[4-[[4-[(1,2-Dihydro-4-hydroxy-2-oxoquinolin-3-yl)azo]-2-methylphenyl]azo]-2-methylphenyl]azo]naphthalene-1,3-disulfonic acid disodium salt
6428-17-7 7-[[4-[(6-Ureido-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]benzoyl]amino]-4-hydroxy-3-[[2-methyl-4-[(2-methyl-4-sodiosulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonic acid sodium salt