lomefloxacin lomefloxacin lomefloxacin hydrochloride (sold under the following brand names in english-speaking countries maxaquin, okacyn, uniquin) is a fluoroquinolone antibiotic used to treat bacterial infections including bronchitis and urinary tract infections. it is also used to prevent urinary tract infections prior to surgery. lomefloxacin is associated with phototoxicity and central nervous system adverse effects. lomefloxacinclinical datatrade namesmaxaquinahfs/drugs.comconsumer drug informationmedlineplusa600002atc codej01ma07 (who) s01ae04 (who)pharmacokinetic dataprotein binding10%elimination half-life8 hoursidentifiers iupac name (rs)-1-ethyl-6,8-difluoro-7-(3-methylpiperazin-1-yl)-4-oxo-quinoline-3-carboxylic acid cas number98079-51-7 yhcl: 98079-52-8 ypubchem cid3948drugbankdb00978 ychemspider3811 yuniil6br2wjd8vhcl: 9vc7s3zxxb ykeggd02318 ychebichebi:116278 ychemblchembl561 ycomptox dashboard (epa)dtxsid4040680 echa infocard100.117.399 chemical and physical dataformulac17h19f2n3o3molar mass351.354 g·mol−13d model (jsmol)interactive imagemelting point239 to 240.5 °c (462.2 to 464.9 °f) smiles fc1c(c(f)c2c(c1)c(=o)c(\c(=o)o)=c/n2cc)n3cc(ncc3)c inchi inchi=1s/c17h19f2n3o3/c1-3-21-8-11(17(24)25)16(23)10-6-12(18)15(13(19)14(10)21)22-5-4-20-9(2)7-22/h6,8-9,20h,3-5,7h2,1-2h3,(h,24,25) ykey:zekzljvoyltdkk-uhfffaoysa-n y (verify) in october 2008, the fda added the following black box warning to the product insert for maxaquin: "lomefloxacin is unique in that it forms a magnesium chelate with itself. the chelate is formed between the 2-carbonyl group of two separate lomefloxacin molecules." it was patented in 1983 and approved for medical use in 1989.