(-)-(R)-N-Ethyl-alpha-methyl-m-(trifluoromethyl)phenethylamine 37577-24-5 Fenfluramine l-form Levofenfluramina [Spanish] Levofenfluramine Levofenfluramine [INN] Levofenfluraminum [Latin] Phenethylamine, N-ethyl-alpha-methyl-m-trifluoromethyl-, l- l-Fenfluramine l-N-Ethyl-alpha-methyl-m-trifluoromethylphenethylamine