disodium 4,5-dichloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzenesulphonate

Disodium,4,5-dichloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzene-sulphonate

4,5-Dichloro-2-[[3-methyl-5-oxo-1-(3-sulfophenyl)-4,5-dihydro-1H-pyrazole-4-yl]azo]benzenesulfonic acid disodium salt

4,5-Dichloro-2-[[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol]-4-yl]azo]benzenesulfonic acid disodium salt