Einecs 217-921-0

ethyl 4-[[4-(ethoxycarbonyl)phenyl]azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate

4-[(4-Ethoxycarbonylphenyl)azo]-4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylic acid ethyl ester