Cefacetrile

Cefacetrile is a first-generation cephalosporin antibiotic medication used to treate bacterial infections. It is sold under the brand names Celospor®, Celtol® and Cristacef®. It a 7-cyanacetylamino derivative of cephalosporic acid, and is also called by the synonyms cefacetrilo, cefacetrilum and cephacetrile.

Chemistry
The IUPAC name of cefacetrile is (6R,7R)-3-(acetyloxymethyl)-7-[(2-cyanoacetyl)amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, and its chemical formula, C13H13N3O6S, yields an average molecular mass of 339.3240 gram/mole. Its antibacterial activity is due to the presence of a beta-lactam core structure, which bind with penicillin-binding proteins within bacterial cells, thereby inhibiting cell wall synthesis in bacteria.