Bemidon, HYDROXYPETHIDINE, Demidone, 4-(3-Hydroxy-phenyl)-1-methyl-piperidin-4-carbonsaeure-aethylester, Oxydolantin, Oxipethidine, Oxipethidinum, Bemidone, Hoechst No. 10,446, Oxypetidin, 4-(3-hydroxy-phenyl)-1-methyl-piperidine-4-carboxylic acid ethyl ester, Hydropetidine