2289-50-1 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-(2-biphenylcarboxamido)-3,3-dimethyl-7-oxo-, monosodium salt 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[([1,1'-biphenyl]-2-ylcarbonyl)amino]-3,3-dimethyl-7-oxo-, monosodium salt, [2S-(2.alpha.,5.alpha.,6.beta.)]- Ancillin sodium salt Diphenicillin sodium NSC75742 Sodium ancillin Sodium diphenicillin