1,2,4-Triazine, 3,3'-(2,4-pyridinediyl)bis(5,6-diphenyl- 2,4-Bis(5,6-diphenyl-1,2,4-triazin-3-yl)pyridine 2,4-Bis(5,6-diphenyl-1,2,4-triazin-3-yl)pyridinetetrasulfonic acid 3,3'-Pyridine-2,4-diylbis(5,6-diphenyl-1,2,4-triazine) 35171-26-7 EINECS 252-417-4 Pyridine, 2,4-bis(5,6-diphenyl-1,2,4-triazin-3-yl)-