tymazoline tymazoline tymazoline (trade name thymazen in poland) is a nasal decongestant that can be used to treat rhinitis. it acts as an antihistaminic and sympathomimetic, reducing swelling, inflammation and mucosal secretions. tymazolineclinical datatrade namesthymazenahfs/drugs.cominternational drug namesroutes ofadministrationtopical (nasal solution)atc coder01aa13 (who) identifiers iupac name 2--4,5-dihydro-1h-imidazole cas number24243-97-8 npubchem cid34154drugbankdb08803 ychemspider31478 yuniiu993rh5585keggd07373 ncomptox dashboard (epa)dtxsid40178939 chemical and physical dataformulac14h20n2omolar mass232.327 g·mol−13d model (jsmol)interactive image smiles cc1ccc(c2c1cccc2occ3=nccn3)c(c)c inchi inchi=1s/c14h20n2o/c1-10(2)12-5-4-11(3)8-13(12)17-9-14-15-6-7-16-14/h4-5,8,10h,6-7,9h2,1-3h3,(h,15,16) ykey:qrorcrwsrpkehr-uhfffaoysa-n y ny (what is this?) (verify)