2-Chloranil 2435-53-2 3,4,5,6-Tetrachloro-3,5-cyclohexadiene-1,2-dione 3,4,5,6-Tetrachloro-o-benzoquinone 3,5-Cyclohexadiene-1,2-dione, 3,4,5,6-tetrachloro- EINECS 219-424-4 Isochloranil NSC 403503 Tetrachloro-1,2-benzoquinone Tetrachloro-o-benzoquinone Tetrachloro-o-quinone o-Benzoquinone, 3,4,5,6-tetrachloro- (8CI) o-Chloranil o-Chloroanil