32425-62-0 4-(5-(3-Carboxy-5-hydroxy-1-(4-sulphophenyl)-1H-pyrazol-4-yl)penta-2,4-dienylidene)-4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid EINECS 251-031-3