fenspiride fenspiride fenspiride (inn, brand names eurespal, pneumorel and others) is an oxazolidinone spiro compound used as a drug in the treatment of certain respiratory diseases. the pharmacotherapeutic classification is antitussives. in russia it was approved for the treatment of acute and chronic inflammatory diseases of ent organs (ear, nose, throat) and the respiratory tract (like rhinopharyngitis, laryngitis, tracheobronchitis, otitis and sinusitis), as well as for maintenance treatment of asthma. russia, romania, france and other european countries withdrew fenspiride-based drugs from the market due to the risk of qt prolongation and torsades de pointes. fenspiride is known to have activity as an alpha-1 blocker. fenspirideclinical datatrade nameseurespal, pneumorelahfs/drugs.cominternational drug namesroutes ofadministrationoralatc coder03bx01 (who) r03dx03 (who)legal statuslegal status in general: ℞ (prescription only) pharmacokinetic databioavailability90%elimination half-life14–16 hoursexcretionurine (90%), feces (~10%)identifiers iupac name 8-(2-phenylethyl)-1-oxa-3,8-diazaspirodecan-2-one cas number5053-06-5 ypubchem cid68626drugbankdb08979 nchemspider3227 nuniis983qc7hkmkeggd07949 ychemblchembl576127 ncomptox dashboard (epa)dtxsid4023048 echa infocard100.023.411 chemical and physical dataformulac15h20n2o2molar mass260.337 g·mol−13d model (jsmol)interactive image smiles c1ccc(cc1)ccn2ccc3(cc2)cn=c(o3)o inchi inchi=1s/c15h20n2o2/c18-14-16-12-15(19-14)7-10-17(11-8-15)9-6-13-4-2-1-3-5-13/h1-5h,6-12h2,(h,16,18) nkey:fvnfbbaombjtst-uhfffaoysa-n n ny (what is this?) (verify)