Main Products: N-(4-Methylphenyl)-3-Oxobutanamide / N-(2-Methoxyphenyl)-3-Oxobutanamide / 4'-Methoxyacetoacetanilide / 2'-Chloroacetoacetanilide / 4'-Chloroacetoacetanilide / N-(2,4-Dimethylphenyl)-3-Oxobutanamide / N-(Acetoacetyl)Anthranilic Acid / 3-Oxo-N-[4-(3-Oxobutanoylamino)Phenyl]Butanamide / N,N'-(2,5-Dichloro-1,4-Phenylene)Bis(3-Oxobutanamide) / N-[5-Chloro-2-Methyl-4-(3-Oxobutanoylamino)Phenyl]-3-Oxobutanamide / N-[2,5-Dimethyl-4-(3-Oxobutanoylamino)Phenyl]-3-Oxobutanamide / 3-Methyl-3-Pyrazolin-5-one / Edaravone / 1-(2-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One / 1-(3'-Chlorophenyl)-3-Methyl-5-Pyrazolone / 1-(4-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One###1-(4-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One / 3-(3-Methyl-5-Oxo-4H-Pyrazol-1-Yl)Benzenesulfonic Acid / 4-(3-Methyl-5-oxo-4,5-Dihydro-1H-Pyrazol-1-yl)Benzenesulfonic acid