2-chloro-4H-pyrido[1,2-a]pyrimidin-4-one 4H-pyrido[1,2-a]pyrimidin-4-one, 2-chloro- InChI=1/C8H5ClN2O/c9-6-5-8(12)11-4-2-1-3-7(11)10-6/h1-5