Phenethicillin potassium, pheneticillin potassium, (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(1-oxo-2-phenoxy propyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid monopotassium salt, potassium phenethicillin, PHENETHICILLIN POTASSIUM SALT, pensig, pen200, maxipen, potassium (2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenoxypropanamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate, alpen, brocsil, darcil, cvk, brl152, broxil, penova