2175-90-8 5-(Diphenylmethylene)-1,3-cyclopentadiene 6,6-Diphenylfulvene Benzene, (2,4-cyclopentadien-1-ylidenephenylmethyl)- Diphenylfulvene Methane, 2,4-cyclopentadien-1-ylidenediphenyl- NSC402188