1,3,4-Thiadiazole, 2-(4-pyridyl)-5-phenyl- 2-(4-Pyridyl)-5-phenyl-1,3,4-thiadiazole 4-(5-Phenyl-1,3,4-thiadiazol-2-yl)pyridine 4291-07-0 BRN 0612847 Pyridine, 4-(5-phenyl-1,3,4-thiadiazol-2-yl)-