teflurane teflurane teflurane (inn, usan, code name abbott 16900) is a halocarbon drug which was investigated as an inhalational anesthetic but was never marketed. its clinical development was terminated due to a high incidence of cardiac arrhythmias in patients, similarly to the cases of halopropane and norflurane. tefluraneclinical dataatc codenoneidentifiers iupac name 2-bromo-1,1,1,2-tetrafluoroethane cas number124-72-1pubchem cid31300chemspider29040unii6492u1o9v8comptox dashboard (epa)dtxsid10861765 chemical and physical dataformulac2hbrf4molar mass180.928 g·mol−13d model (jsmol)interactive image smiles c(c(f)(f)f)(f)br inchi inchi=1s/c2hbrf4/c3-1(4)2(5,6)7/h1hkey:rzxzizdrfqfcta-uhfffaoysa-n chemistry teflurane is 2-bromo-1,1,1,2-tetrafluoroethane, a haloalkane. it is a gas at standard conditions. the compound is chiral.