3-(2-chloroethyl)-9-hydroxy-2-methylpyrido[1,2-a]pyrimidin-4-one,hydrochloride

3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-Pyrido[1,2-a]pyrimidin-4-one Hydrochloride is an intermediate in the synthesis of analog of Paliperidone, a combined serotonin and dopamine receptor antagonist.