1,3,4-Oxadiazole, 2-(1,1'-biphenyl)-4-yl-5-phenyl- 1,3,4-Oxadiazole, 2-(4-biphenylyl)-5-phenyl- (8CI) 2-Biphenyl-4-yl-5-phenyl-1,3,4-oxadiazole 59597-86-3 852-38-0 EINECS 212-712-0 NSC 24858 PBD