1H-Pyrazole-3-carboxylic acid, 4-((2,5-dichlorophenyl)azo)-4,5-dihydro-5-oxo-1-phenyl-, ethyl ester 2008-88-0 4-((2,5-Dichlorophenyl)azo)-5-hydroxy-1-phenylpyrazole-3-carboxylicacid, ethyl ester EINECS 217-922-6 Ethyl 4-((2,5-dichlorophenyl)azo)-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate