16926-70-8 Benzoic acid, 4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, ethyl ester Benzoic acid, p-[(3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)azo]-, ethyl ester NSC114439