262-12-4 AI3 08911 CCRIS 211 DIBENZO-P-DIOXIN Dibenzo(1,4)dioxin Dibenzo(b,e)(1,4)dioxin Dibenzo-para-dioxin Dibenzodioxin Diphenylene dioxide EINECS 205-974-2 HSDB 4112 NCI-C03656 Oxanthrene Phenodioxin