NCIt definition : The sodium salt form of oxacillin, a semisynthetic penicillinase-resistant and acid-stable
penicillin with an antimicrobial activity. Oxacillin binds to penicillin-binding proteins
in the bacterial cell wall, thereby blocking the synthesis of peptidoglycan, a critical
component of the bacterial cell wall. This leads to inhibition of cell growth and
causes cell lysis.;