4-amino-5-(thiophen-2-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione
4-amino-5-(thiophen-2-yl)-4H-1,2,4-triazole-3-thiol
5-phenyl-2-thiophen-2-yl-thiazolo[2,3-b][1,3,4]thiadiazole
5-Thiophen-2-yl-4-{[1-p-tolyl-meth-(E)-ylidene]-amino}-2,4-dihydro-[1,2,4]triazole-3-thione