dicloxacillin antibiotic_resistance dicloxacilin dicloxacycline ChEMBL:CHEMBL893 ARO:3000635 PubChem:18381 Dicloxacillin is a penicillin derivative that has an extra chlorine atom in comparison to cloxacillin. While more active than cloxacillin, its high affinity for serum protein reduces its activity in human serum in vitro. ChEBI:4511 CAS:3116-76-5 beta-lactamase resistant penicillin