Synonyms: 2,6-Dimethyl-3-n-butyl-4-oxo-4H-pyrido(1,2-a)pyrimidine hydrochloride;3-Butyl-2,6-dimethyl-4H-pyrido(1,2-a)pyrimidin-4-one monohydrochloride;4H-Pyrido(1,2-a)pyrimidin-4-one, 3-butyl-2,6-dimethyl-, monohydrochloride;AC1MHLZ6;LS-134163;3-butyl-2,6-dimethylpyrido[1,2-a]pyrimidin-4-one hydrochloride;70381-28-1