1-((4,4-Dimethyl-4H-1,3-benzothiazin-2-yl)methyl)-3-methyl-4-piperidone hydrochloride 2-(4'-Oxo-3'-methylpiperidino)methyl-4,4-dimethyl-4H-1,3-benzothiazine hydrochloride 4-Piperidone, 1-((4,4-dimethyl-4H-1,3-benzothiazin-2-yl)methyl)-3-methyl-, hydrochloride 81735-50-4