NCIt definition : The sodium salt of cloxaclliin, a semisynthetic beta-lactamase resistant penicillin
antibiotic with antibacterial activity. Cloxacillin binds to and inactivates penicillin-binding
proteins (PBPs) located on the inner membrane of the bacterial cell wall, thereby
preventing the cross-linkage of peptidoglycans, which are critical components of the
bacterial cell wall. This leads to an interruption of the bacterial cell wall and
causes bacterial cell lysis.;