1,3,5-Triazine, 2,4,6-tri-2-pyridinyl-, monoperchlorate 2,4,6-Tripyridin-2-yl-1,3,5-triazine monoperchlorate 2,4,6-Tris(2-pyridyl)-1,3,5-triazine perchlorate (1:1) 3682-35-7 63451-30-9 EINECS 264-191-4 TPTZ perchlorate