1,3,4-Thiazole, 2,5-bis(4-piridinyl)- 15311-09-8 2,5-Bis(4-piridinyl)-1,3,4-thiadiazole 2,5-Bis(4-pyridyl)-1,3,4-thiadiazole 4,4'-(1,3,4-Thiadiazole-2,5-diyl)dipyridine 4-27-00-09589 (Beilstein Handbook Reference) BRN 0198070 EINECS 239-353-2 NSC 34795 Pyridine, 4,4'-(1,3,4-thiadiazole-2,5-diyl)di-