Synonyms: Hydroquinone,tetrachloro- (6CI,7CI,8CI); 2,3,5,6-Tetrachloro-1,4-benzenediol;2,3,5,6-Tetrachloro-1,4-dihydroxybenzene; 2,3,5,6-Tetrachlorohydroquinone;Dihydro-p-chloranil; NSC 100888; NSC 4858; Nordrosophilin A;Perchlorohydroquinone; Tetrachloro-1,4-benzenediol;Tetrachloro-1,4-hydroquinone; Tetrachloro-p-benzohydroquinone;Tetrachloro-p-hydroquinone; Tetrachlorobenzoquinol