Cloxacillin Sodium, a chlorinated derivative of Oxacillin, is a semi-synthetic antibiotic. Cloxacillin is used for the treatment of infections caused by species of staphylococci which produce beta-lactamase.
Dicloxacillin (INN), a narrow-spectrum β-Lactam antibiotic of the penicillin class, is used against beta-lactamase-producing organisms such as Staphylococcus aureus, which would otherwise be resistant to most penicillins.