tetrasodium 2,2'-[1,4-phenylenebis[carbonylimino[2-acetamido-4,1-phenylene]azo]]bis[5-[(4-sulphonatophenyl)azo]benzenesulphonate]

2,2'-[1,4-Phenylenebis[carbonylimino[2-(acetylamino)-4,1-phenylene]azo]]bis[5-[4-(sodiosulfo)phenylazo]benzenesulfonic acid]disodium salt

Benzenesulfonic acid, 2,2'-[1,4-phenylenebis[carbonylimino[ 2-(acetylamino)-4,1-phenylene]azo]]bis [5-[(4-sulfophenyl)azo]-, tetrasodium salt