2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one 4H-pyrido[1,2-a]pyrimidin-4-one, 6,7,8,9-tetrahydro-2-methyl- InChI=1/C9H12N2O/c1-7-6-9(12)11-5-3-2-4-8(11)10-7/h6H,2-5H2,1H