4,5,6,7-tetrachloro-2-ethylisoindole-1,3-dione

4,5,6,7-tetrachloro-2-(hydroxymethyl)isoindole-1,3-dione

2,3,4,5-tetrachloro-6-(ethoxycarbonyl)benzoic acid

2,3,4,5-tetrachloro-6-(2-hydroxy-5-methylbenzoyl)benzoic acid

3,4,6-trichlorophthalic acid