Synonyms: 4H-Pyrido[1,2-a]pyrimidin-4-one,3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-, monohydrochloride (9CI);3-(2-Chloroethyl)-2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-1-iumchloride;3-(2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-onehydrochloride;