2-Pyridinamine, 4-(5-amino-1H-1,2,4-triazol-3-yl)-N-ethyl- 3-Aeptz 3-Amino-5-(2-(ethylamino)-4-pyridyl)-1,2,4-triazole 4-(5-Amino-1H-1,2,4-triazol-3-yl)-N-ethyl-2-pyridinamine 77314-77-3