trisodium 4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate

1H-Pyrazole-3-carboxylic acid, 4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-, trisodium salt

4-[[5-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-2-[(sodiooxy)sulfonyl]phenyl]azo]-4,5-dihydro-5-oxo-1-[4-[(sodiooxy)sulfonyl]phenyl]-1H-pyrazole-3-carboxylic acid sodium salt