α-Oximino-β-phenylhydrazono-buttersaeure-anilid;2-Hydroxyimino-3-phenylhydrazono-buttersaeure-anilid;Phenylhydrazon v. 2,3-dioxobutyranilid-2-oxim;Butanamide, 2-(hydroxyimino)-N-phenyl-3-(2-phenylhydrazinylidene)-;2-hydroxyimino-N-phenyl-3-(phenylhydrazinylidene)butanamide