1,3,4-Oxadiazole, 2,5-diphenyl- 1,3,4-Oxadiazole, 2-5-diphenyl- 2,5-Diphenyl-1,3,4-oxadiazole 2,5-Diphenyloxadiazole 725-12-2 NSC53152 PPD WLN: T5NN DOJ CR& ER