2,4,8,10-Tetraoxaspiro[5.5]undecane, 3,9-di(3-cyclohexenyl)- 2,4,8,10-Tetraoxaspiro[5.5]undecane, 3,9-di-3-cyclohexen-1-yl- 3,9-Di(3-cyclohexenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane 6600-31-3 Bis(.delta.-tetrahydrobenzylidene)pentaerythritol NSC82301