1,2-Dihydro-1-acetyl-3-phenylpyrido(3,4-e)-1,2,4-triazine 3-Phenyl-1-acetyl-1,4-dihydropyrido(3,4-e)-as-triazine 76603-26-4 Pyrido(3,4-e)-1,2,4-triazine, 1,2-dihydro-1-acetyl-3-phenyl-