1,1'-(1,1,2,2-Tetramethylethylene)dibenzene 1889-67-4 2,3-Dimethyl-2,3-diphenylbutane AI3-23740 Benzene, 1,1'-(1,1,2,2-tetramethyl-1,2-ethanediyl)bis- Bibenzyl, .alpha.,.alpha.,.alpha.',.alpha.'-tetramethyl- Bibenzyl, alpha,alpha,alpha',alpha'-tetramethyl- (8CI) Butane, 2,3-dimethyl-2,3-diphenyl- Dicumene EINECS 217-568-2 NSC 34859 alpha,alpha'-Dicumyl