4-Amino-5-(2-thienyl)-4H-1,2,4-triazole-3-thiol4-Amino-5-(thien-2-yl)-4H-1,2,4-triazole-3-thiol4-Amino-2,4-dihydro-5-(thien-2-yl)-3H-1,2,4-triazole-3-thione4-Amino-3-mercapto-5-(thien-2-yl)-4H-1,2,4-triazole4-amino-5-thien-2-yl-4H-1,2,4-triazole-3-thiol