Synonyms: Terephthaloylchloride, tetrachloro- (6CI,7CI,8CI); 2,3,5,6-Tetrachloroterephthalicdichloride; 2,3,5,6-Tetrachloroterephthaloyl chloride;2,3,5,6-Tetrachloroterephthaloyl dichloride; Perchloroterephthaloyl chloride;Tetrachloroterephthalic dichloride; Tetrachloroterephthaloyl chloride;Tetrachloroterephthaloyl dichloride