4-(3-(3-Carboxy-5-hydroxy-1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)allylidene)-4,5-dihydro-5-oxo-1-(2,2,2-trifluoroethyl)-1H-pyrazole-3-carboxylic acid 76552-35-7 EINECS 278-491-8