Phthalide27355-22-2100 % similar Tetrachlorophthalic anhydride117-08-850 % similar Dimethyl tetrachloroterephthalate1861-32-142 % similar 4,5,6,7-Tetrachloro-2,3-dihydro-1H-indene-1,3-dione30675-13-940 % similar Pentachlorobenzoic acid1012-84-635 % similar Tetrachlorophthalic acid632-58-635 % similar 7-Methoxy-3H-isobenzofuran-1-one28281-58-535 % similar 2,3,5,6-Tetrachloro-1,4-benzenedicarbonyl dichloride719-32-433 % similar 4,5,6,7-Tetrachloro-2-methyl-1H-isoindole-1,3(2H)-dione14737-80-532 % similar Chlorthal2136-79-032 % similar Phthalide87-41-231 % similar