Cephaloridine (or cefaloridine) is a first-generation semisynthetic derivative of antibiotic cephalosporin C. It is a Beta lactam antibiotic, like penicillin. Its chemical structure contains 3 cephems, 4 carboxyl groups and three pyridinium methyl groups.
Cephaloridine is mainly used in veterinary practice. It is unique among cephalosporins in that it exists as a zwitterion.
