trisodium 5-oxo-1-(4-sulfonatophenyl)-4-(4-sulfonatophenyl)diazenyl-4H-pyrazole-3-carboxylate
CAS No. 1342-47-8
Yellow 5; trisodium 5-oxo-1-(4-sulfonatophenyl)-4-[(E)-(4-sulfonatophenyl)diazenyl]-4,5-dihydro-1H-pyrazole-3-carboxylate