1,2-Dihydro-3-methyl-1-(1-oxopropyl)pyrido(3,4-e)-1,2,4-triazine 3-Methyl-1-propionyl-1,4-dihydropyrido(3,4-e)-as-triazine 76603-20-8 Pyrido(3,4-e)-1,2,4-triazine, 1,2-dihydro-3-methyl-1-(1-oxopropyl)-