27969-56-8 Benzenesulfonic acid, 4-(4,5-dihydro-4-(5-(5-hydroxy-3-methyl-1-(4-sulfophenyl)-1H-pyrazol-4-yl)-2,4-pentadienylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)- EINECS 248-752-0 p-(4,5-Dihydro-4-(5-(5-hydroxy-3-methyl-1-(4-sulphophenyl)-1H-pyrazol-4-yl)penta-2,4-dienylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonic acid