1,2,7,8-TETRACHLORODIBENZO-P-DIOXIN 2,3,6,7-Tetrachlorodibenzodioxin 34816-53-0 BRN 1586203 Dibenzo(b,e)(1,4)dioxin, 1,2,7,8-tetrachloro- Dibenzo-p-dioxin, 1,2,7,8-tetrachloro-