.alpha.-Phenoxyethylpenicillin 1-Phenoxyethylpenicillin 147-55-7 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-(2-phenoxypropionamido)- 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-[(1-oxo-2-phenoxypropyl)amino]-, [2S-(2.alpha.,5.alpha.,6.beta.)]- NSC117548 Phenethicilin Phenethicillin Pheneticillin Phenoxy PC Phenoxyethylpenicillin