etofenamate etofenamate etofenamate is a nonsteroidal anti-inflammatory drug (nsaid) used for the treatment of joint and muscular pain. it is available for topical application as a cream, a gel or as a spray. etofenamateclinical dataahfs/drugs.cominternational drug namesroutes ofadministrationtopical (cream, gel, spray)atc codem02aa06 (who) legal statuslegal status in general: over-the-counter (otc) pharmacokinetic dataprotein binding98–99%metabolitesflufenamic acid, hydroxyl derivativesexcretion35% renal, mostly biliaryidentifiers iupac name 2-(2-hydroxyethoxy)ethyl 2-amino]benzoate cas number30544-47-9 ypubchem cid35375drugbankdb08984 ychemspider32560 yuniikzf0xm66jckeggd04102 ycomptox dashboard (epa)dtxsid2045448 echa infocard100.045.650 chemical and physical dataformulac18h18f3no4molar mass369.340 g·mol−13d model (jsmol)interactive image smiles fc(f)(f)c1cc(ccc1)nc2ccccc2c(=o)occocco inchi inchi=1s/c18h18f3no4/c19-18(20,21)13-4-3-5-14(12-13)22-16-7-2-1-6-15(16)17(24)26-11-10-25-9-8-23/h1-7,12,22-23h,8-11h2 ykey:xilvepyqjiovnb-uhfffaoysa-n y (verify) etofenamate is acutely toxic if swallowed; it is also very toxic to aquatic life, with long lasting effects.