1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN 1,2,3,7,8-Penta polychlorinated dibenzo-p-dioxin 1,2,3,7,8-Pentachlorodibenzo(b,e)(1,4)dioxin 1,2,3,7,8-Pentachlorodibenzo-p-dioxin [Dioxin and dioxin-like compounds] 1,2,3,7,8-Pentachlorodibenzodioxin 40321-76-4 5-19-02-00042 (Beilstein Handbook Reference) BRN 1626844 Dibenzo-p-dioxin, 1,2,3,7,8-pentachloro-