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Methyl phenethylNphenylpropionamidopiperidinecarboxylate .svg validSVG Structure of methyl phenethyl Nphenylpropionamido piperidinecarboxylate Own Emeldir talk Beilstein Handbook Reference BRN carfentanil Carfentanil Carfentanil Citrate Carfentanila Carfentanilo citrato de Carfentanilum Carfentanyl DEA No Methyl phenethyl Nphenylpropionamido