1,3,4-Oxadiazole, 2-(4-biphenylyl)-5-(p-tert-butylphenyl)- 1,3,4-Oxadiazole, 2-[1,1'-biphenyl]-4-yl-5-[4-(1,1-dimethylethyl)phenyl]- 15082-28-7 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole Butyl-PBD NSC158164