oxitropium bromide oxitropium bromide oxitropium bromide (trade names oxivent, tersigan) is an anticholinergic used as a bronchodilator for the treatment of asthma and chronic obstructive pulmonary disease. oxitropium bromideclinical datatrade namesoxivent, tersigan, tersigat, ventilatother namesn-ethylscopolammonium bromide; ba 253; ba 253br-l; ba 253br; hyoscine ethobromide; n-ethylnorscopolamine methyl bromide; scopolamine ethobromideahfs/drugs.cominternational drug namesatc coder03bb02 (who) identifiers iupac name (8r)-6β,7β-epoxy-8-ethyl-3α-hydroxy-1αh,5αh-tropanium bromide (−)-tropate cas number30286-75-0chemspider16735948uniisf4nw7nh7cchemblchembl1697846comptox dashboard (epa)dtxsid0023402 echa infocard100.045.543 chemical and physical dataformulac19h26brno4molar mass412.324 g·mol−13d model (jsmol)interactive image smiles .oc(c1ccccc1)c(=o)o2c34o4(c2)3(c)cc inchi inchi=1s/c19h26no4.brh/c1-3-20(2)15-9-13(10-16(20)18-17(15)24-18)23-19(22)14(11-21)12-7-5-4-6-8-12;/h4-8,13-18,21h,3,9-11h2,1-2h3;1h/q+1;/p-1/t13-,14-,15-,16+,17-,18+,20?;/m1./s1key:lcelqernwlbpsy-khstumndsa-m it was patented in 1966 and approved for medical use in 1983.