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Cephalosporin
Drug class
Cephalosporin core structure.svg
Core structure of the cephalosporins
Class identifiers
UseBacterial infection
ATC codeJ01D
Biological targetPenicillin binding proteins
Clinical data
Drugs.comDrug Classes
External links
MeSHD002511
In Wikidata
Structure of the classical cephalosporins

The cephalosporins (sg. /ˌsɛfələˈspɔːrɪn, ˌkɛ-, -l-/[1][2]) are a class of β-lactam antibiotics originally derived from the fungus Acremonium, which was previously known as "Cephalosporium".[3]

Together with cephamycins, they constitute a subgroup of β-lactam antibiotics called cephems. Cephalosporins were discovered in 1945, and first sold in 1964.[4]