1,3,4-Thiadiazole, 2,2'-(methylenediimino)bis- 26907-37-9 BRN 0993888 Bis-A-tda Bis-ADTA Di-Ku-shuang Dikushuang Methanediamine, N,N'-bis(1,3,4-thiadiazol-2-yl)- (9CI) Methylene-bis-(2-amino-1,3,4-thiadiazole) Methylenebisaminothiazole N,N'-Bis(1,3,4-thiadazol-2-yl)methanediamine N,N'-Methylenebis(2-amino-1,3,4-thiadiazole) N,N-Methylenebis(1,3,4-thiadiazol-2-amine) NSC-143019 TK-5477 Thiodaqual