2,3,4,5-Chlorothiophene 2,3,4,5-Tetrachlorothiophene 6012-97-1 ENT 25,764 IF IF (fumigant) NSC61442 Pemphene Penn salt td-183 Penphene Perchlorothiophene TCTP TD-183 Tetrachlorothiofene Thiophene, 2,3,4,5-tetrachloro- Thiophene, tetrachloro- WLN: T5SJ BG CG DG EG