Prepared of n-aryl-2-[(4-amino-4H-1,2,4-triazol-3yl)thio] acetamides by interaction of amino-1,2,4-triazolyl-3thiol with n-aril-2-chloroacetamides and formation of n-aryl-2-[6,8-dimethyl[1,2,4]triazolo[4,3-b]pyradazin-3-yl)thio]acetamide derivatives.