The chemical Pefloxacin mesylate has a designated molecular formula of C18H24FN3O6S and a molecular weight of 429.463 g/mol. Synonyms may include: 1589 mR.B., EINECS 274-613-9, UNII-5IAD0UV3FH (ChemID). Pefloxacin mesylate has been assigned a MeSH pharmacological action of: Antibacterial, Cytochrome P-450 CYP1A2 Inhibitor, Topoisomerase II Inhibitor.