83027-41-2 7-acetamido-4-hydroxy-3-[(2-sulphophenyl)azo]naphthalene-2-sulphonic acid, sodium salt
83027-47-8 2,5-dichloro-4-[4,5-dihydro-3-methyl-5-oxo-4-[[3-[[(phenylsulphonyl)amino]sulphonyl]phenyl]azo]-1H-pyrazol-1-yl]benzenesulphonic acid, sodium salt