Synonyms: 3,6-Dimethyl-2-ethyl-4-oxo-4H-pyrido(1,2-a)pyrimidine hydrochloride;3,6-Dimethyl-2-ethyl-4H-pyrido(1,2-a)pyrimidin-4-one monohydrochloride;4H-Pyrido(1,2-a)pyrimidin-4-one, 3,6-dimethyl-2-ethyl-, monohydrochloride;AC1MHLZA;LS-134178;2-ethyl-3,6-dimethylpyrido[1,2-a]pyrimidin-4-one hydrochloride;70381-32-7