1,1-Bis(4-chlorophenyl)ethylene 1,1-Bis(p-chlorophenyl)ethene 1,1-Bis(p-chlorophenyl)ethylene 2642-81-1 Benzene, 1,1'-ethenylidenebis[4-chloro- DDNU DMC ethylene Ethylene, 1,1-bis(p-chlorophenyl)- NSC2366 unsym-Bis(p-chlorophenyl)ethylene