3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one

3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one is a synthetic organic compound featuring a fused pyrido[1,2-a]pyrimidine ring with a 2-methyl group, a 2-chloroethyl side chain, and a ketone at the 4-position. Compounds with this structure are often studied as intermediates in medicinal chemistry and drug design.