1,3,5-Triazine, hexahydro-2,4,6-tri-2-pyridinyl-, trihydriodide 1,3,5-Tris(2-pyridyl)hexahydro-s-triazine trihydroiodide 73941-09-0 s-Triazine, hexahydro-1,3,5-tris(2-pyridyl)-, trihydriodide