1-Amino-5-(4-pyridyl)-1H-1,2,4-triazole-3-thiol 1H-1,2,4-Triazole-3-thiol, 1-amino-5-(4-pyridyl)- 4923-02-8 BRN 2975635 Pyridine, 4-(1-amino-3-mercapto-1H-1,2,4-triazol-5-yl)-