1,2-Dihydro-1-(1-oxobutyl)-3-phenylpyrido(3,4-e)-1,2,4-triazine 3-Phenyl-1-butyryl-1,4-dihydropyrido(3,4-e)-as-triazine 76603-28-6 Pyrido(3,4-e)-1,2,4-triazine, 1,2-dihydro-1-(1-oxobutyl)-3-phenyl-