Synonyms: 3,4,5,6-Tetrachlorcyclohexa-3,5-dien-1,2-dion;3,4,5,6-Tetrachloro-1,2-benzoquinone;3,4,5,6-Tetrachloro-3,5-cyclohexadiene-1,2-dione;3,4,5,6-Tetrachlorobenzo-1,2-quinone;3,4,5,6-Tetrachloro-o-benzoquinone;3,5-cyclohexadiene-1,2-dione, 3,4,5,6-tetrachloro-;2-chloranil;Isochloranil;