5,6-diphenyl-as-triazin-3(2h)-one, 5,6-DIPHENYL-3-HYDROXY-1,2,4-TRIAZINE, 5,6-di(phenyl)-2H-1,2,4-triazin-3-one, 4-triazin-3(2h)-one,5,6-diphenyl-2, 1,6-diphenyl-4-oxo-3,4,5,6-tetrahydro-2,3,5-triazine, 3-oxo-5,6-diphenyl-2,3-dihydro-as-triazine, 3-HYDROXY-5,6-DIPHENYL-1,2,4-TRIAZINE, 5,6-diphenyl-as-triazin-3-o, 5,6-Diphenyl-2H-[1,2,4]triazin-3-on, 5,6-Diphenyl-1,2,4-triazin-3(2H)-one, 5,6-diphenyl-2(4)H-[1,2,4]triazin-3-one, 5,6-diphenyl-as-triazin-3-ol, 2,3-dihydro-5,6-diphenyl-as-triazin-3-one