4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-, 4,4-dioxide, (2,2-dimethyl-1-oxopropoxy)methyl ester, (2S-cis)- 69388-79-0 CP 47904 Hydroxymethyl (2S,5R)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate pivalate (ester), 4,4-dioxide Pivsulbactam SULBACTAM PIVOXIL Sulbactam pivoxil [USAN] Sulbactam pivoxyl