1,1-Diphenyl-1-propene 1,1-Diphenyl-1-propylene 1,1-Diphenylpropene 1-Methyl-2,2-diphenylethene 1-Methyl-2,2-diphenylethylene 2-Methyl-1,1-diphenylethylene 778-66-5 Benzene, 1,1'-(1-propenylidene)bis- NSC42487 Propene, 1,1-diphenyl-