1,2,4-trichloro-5-(4-chlorobenzene-1-sulfonyl)benzene, tedion, 1,2,4-trichloro-5-(4-chlorophenyl)sulfonylbenzene, 4-chlorophenyl 2,4,5-trichlorophenyl sulfone, Tetradifon, 1,2,4-trichloro-5-[(4-chlorophenyl)sulfonyl]benzene, 1,2,4-Trichloro-5-((4-chlorophenyl)sulfonyl)benzene, Benzene, 1,2,4-trichloro-5-[(4-chlorophenyl)sulfonyl]-