1-Methyl-4-phenyl-piperidin-4-carbon-saeure-aethylester [German] 1-Methyl-4-phenylisonipecotic acid, ethyl ester 1-Methyl-4-phenylpiperidine-4-carboxylic acid ethyl ester 4-Piperidinecarboxylic acid, 1-methyl-4-phenyl-, ethyl ester 50-13-5 57-42-1 DEA No. 9230 Demerol EINECS 200-329-1 Ethyl 1-methyl-4-phenylisonipecotate Ethyl 1-methyl-4-phenylpiperidine-4-carboxylate HSDB 3116 Isonipecaine Isonipecotic acid, 1-methyl-4-phenyl-, ethyl ester MEPERIDINE Meperidol Methyl phenylpiperidine carbonic acid ethyl ester N-Methyl-4-phenyl-4-carbethoxypiperidine Nemerol Pethanol Pethidin Pethidine Pethidineter Pethidinum [INN-Latin] Petidina [INN-Spanish] Petydyna [Polish] Phetidine Pipersal