1,3,4-Thiadiazole, 2,5-bis[(carbamoyl)methylthio]- 2,5-Bis[(carbamoyl)methylthio]-1,3,4-thiadiazole 73908-91-5 Acetamide, 2,2'-[1,3,4-thiadiazole-2,5-diylbis(thio)]bis- NSC203173