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- (9CI) NSC 203173