etafenone etafenone etafenone is a vasodilator which has been used as an antianginal agent. etafenoneclinical dataatc codec01dx07 (who) identifiers iupac name 1-(3-phenyl)propan-1-one cas number90-54-0 npubchem cid3275chemspider3160 nunii0i14k589e7keggd01440 ycomptox dashboard (epa)dtxsid6046181 chemical and physical dataformulac21h27no2molar mass325.452 g·mol−13d model (jsmol)interactive image smiles ccn(cc)ccoc1ccccc1c(=o)ccc2ccccc2 inchi inchi=1s/c21h27no2/c1-3-22(4-2)16-17-24-21-13-9-8-12-19(21)20(23)15-14-18-10-6-5-7-11-18/h5-13h,3-4,14-17h2,1-2h3 nkey:oegdfslngabbkj-uhfffaoysa-n n ny (what is this?) (verify)