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Systematic (IUPAC) name
azabicyclo[3.2.0]heptane-2-carboxylic acid
CAS number 68373-14-8
ATC code J01CG01
PubChem 130313
Chemical data
Formula C8H11NO5S 
Mol. mass 233.243 g/mol
Pharmacokinetic data
Bioavailability 1
Metabolism  ?
Half life  ?
Excretion Kidneys?
Therapeutic considerations
Pregnancy cat.


Legal status


Routes Injection

Sulbactam is a molecule which is given in combination with beta-lactam antibiotics to inhibit beta-lactamase, an enzyme produced by bacteria that destroys the antibiotics. Sulbactam is an irreversible inhibitor of beta-lactamase; it binds the enzyme and does not allow it to interact with the antibiotic. Sulbactam is able to inhibit the most common forms of beta-lactamase but is not able to interact with the ampC cephalosporinase. Thus, it confers little protection against bacteria such as Pseudomonas aeruginosa, Citrobacter, Enterobacter, and Serratia, which often express this gene. In the United States, sulbactam is combined to form cefoperazone/sulbactam and ampicillin/sulbactam. It does possess some antibacterial activity when administered alone, but it is too weak to have any clinical importance. Its use in the UK is restricted to hospitals.


  • Singh GS. Beta-lactams in the new millennium. Part-II: cephems, oxacephems, penams and sulbactam. Mini Rev Med Chem. 2004 Jan;4(1):93-109. Review. PMID 14754446

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sulbactam". A list of authors is available in Wikipedia.
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