3-methyl-1-[(3-methylpiperidyl)methyl]piperidine, Piperidine,1,1'-methylenebis(3-methyl, Bis(3-methylpiperidino)methane, di(3-methylpiperidine)methane, 1,1-methylenebis(3-methylpiperidine), di(3-methylpiperidin-1-yl)methane, Piperidine, 1,1‘-methylenebis[3-methyl-