naftopidil naftopidil naftopidil (inn, marketed under the brand name flivas) is a drug used in benign prostatic hypertrophy which acts as a selective α1-adrenergic receptor antagonist or alpha-1 blocker. naftopidilclinical datatrade namesflivasahfs/drugs.cominternational drug namesroutes ofadministrationoralatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 1--3-(1-naphthyloxy)propan-2-ol cas number57149-07-2 ypubchem cid4418chemspider4265 nuniir9phw59sfncomptox dashboard (epa)dtxsid5045176 echa infocard100.220.557 chemical and physical dataformulac24h28n2o3molar mass392.499 g·mol−13d model (jsmol)interactive image smiles coc1=cc=cc=c1n2ccn(cc2)cc(coc3=cc=cc4=cc=cc=c43)o inchi inchi=1s/c24h28n2o3/c1-28-24-11-5-4-10-22(24)26-15-13-25(14-16-26)17-20(27)18-29-23-12-6-8-19-7-2-3-9-21(19)23/h2-12,20,27h,13-18h2,1h3 nkey:hrrbjvnmsrjfhq-uhfffaoysa-n n (verify)