1,2:5,6-Diepoxycyclooctane 1,5-Cyclooctadiene diepoxide 286-75-9 5,10-Dioxatricyclo(7.1.0.0(sup 4,6))decane 5,10-Dioxatricyclo(7.1.0.04,6)decane CCRIS 3755 Cycloocta-1,5-diene dioxide Cyclooctane, 1,2:5,6-diepoxy- EINECS 206-011-9 NSC 117405