1,2-Di-p-tolylethane 4,4'-Dimethylbibenzyl 4-05-00-01943 (Beilstein Handbook Reference) 538-39-6 BIBENZYL, 4,4'-DIMETHYL- BRN 1909630 Benzene, 1,1'-(1,2-ethanediyl)bis(4-methyl-