2,2-Diphenylacetaldehyde 4-07-00-01400 (Beilstein Handbook Reference) 947-91-1 AI3-20753 Acetaldehyde, diphenyl- BRN 1424292 Benzeneacetaldehyde, alpha-phenyl- (9CI) DIPHENYLACETALDEHYDE Diphenylketen EINECS 213-433-7 NSC 21645 alpha-Phenylbenzeneacetaldehyde