102017-57-2 2-((1-(2-Ethylphenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)benzoic acid 68227-57-6 Benzoic acid, 2-((1-(2-ethylphenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)- EINECS 269-370-0