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A clavam is a molecule similar to a penam, but with an oxygen substituted for the sulfur.[1] Thus, they are also known as oxapenams.

An example is clavulanic acid,[2] from which this compound class receives its name.


  1. ^ "". Retrieved 2008-12-29. 
  2. ^ Chemical Research Laboratory, Oxford University (The Schofield Group). "Antibiotic Biosynthesis, Clavulanic Acid Mode of Action and Biosynthesis". Retrieved 2011-07-25.