1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-(3-(tetrahydro-1,3-dimethyl-2,4,6-trioxo-5(2H)-pyrimidinylidene)-1-propenyl)-, 3-ethyl ester 3-Carboxylic acid-4-(3-(1,3-dimethyl-2,4,6-(1H,3H,5H)-pyrimidinetrione-5-ylidene)-1-propenyl)-4,5-dihydo-5-oxo-1-(4-sulfophenyl)-pyrazole, 3-ethylester 3-Ethyl 4,5-dihydro-5-oxo-1-(4-sulphophenyl)-4-(3-(tetrahydro-1,3-dimethyl-2,4,6-trioxo-5(2H)-pyrimidinylidene)prop-1-enyl)-1H-pyrazole-3-carboxylate 68541-06-0 EINECS 271-339-1