3,5-Cyclohexadiene-1,2-dione, 3,5-bis(1,1-dimethylethyl)- (9CI) 3,5-Di-tert-butyl-1,2-benzoquinone 3,5-Di-tert-butyl-o-benzoquinone 3383-21-9 EINECS 222-189-0 NSC 149061 o-Benzoquinone, 3,5-di-tert-butyl- (8CI)