5'-Chloro-2'-methyl-α-(4-chloro-2-nitrophenylazo)acetoacetanilide

N-(2-Methyl-5-chlorophenyl)-2-(2-nitro-4-chlorophenylazo)-3-oxobutanamide

Butanamide, N-(5-chloro-2-methylphenyl)-2-(4-chloro-2-nitrophenyl)azo-3-oxo-