2(3H)-Thiazolethione (9CI) 2-Mercapto-1,3-thiazole 2-Mercaptothiazole 2-Thiazolethiol 4-Thiazoline-2-thione (8CI) 5685-05-2 NSC 24294 NSC 41217 Thiazoline-2-thione delta4-Thiazoline-2-thione