15743-13-2 2,2,4,5-Tetrachloro-4-cyclopentene-1,3-dione 2,2,4,5-Tetrachlorocyclopentene-1,3-dione 2,2,4,5-Tetrachlorocyclopentenedione 4-Cyclopentene-1,3-dione, 2,2,4,5-tetrachloro- 4-Cyclopentene-1,3-dione, tetrachloro- (6CI,7CI) AI3-27049 CCRIS 7947 Perchlorocyclopentene-3,5-dione Tetrachlorocyclopentene-2,4-dione