Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3,3-dimethyl-7-oxo-, iodomethyl ester, 4,4-dioxide, (2S-cis)-; Iodomethyl1,1-dioxopenicillanate; Iodomethyl S,S-dioxopenicillanate; Iodomethylpenicillanate 1,1-dioxide; Sulbactam iodomethyl ester