diprafenone diprafenone diprafenone is an antiarrhythmic beta adrenergic antagonist. diprafenone names iupac name 1-phenyl]-3-phenylpropan-1-one identifiers cas number 81447-80-5 y 3d model (jsmol) interactive image chemspider 64381 mesh c037836 pubchem cid 71249 unii 1p35md5c1f y comptox dashboard (epa) dtxsid10868613 inchi inchi=1s/c23h31no3/c1-4-23(2,3)24-16-19(25)17-27-22-13-9-8-12-20(22)21(26)15-14-18-10-6-5-7-11-18/h5-13,19,24-25h,4,14-17h2,1-3h3key: vdkmysmwqcfybq-uhfffaoysa-ninchi=1/c23h31no3/c1-4-23(2,3)24-16-19(25)17-27-22-13-9-8-12-20(22)21(26)15-14-18-10-6-5-7-11-18/h5-13,19,24-25h,4,14-17h2,1-3h3key: vdkmysmwqcfybq-uhfffaoyav smiles ccc(c)(c)ncc(coc1=cc=cc=c1c(=o)ccc2=cc=cc=c2)o properties chemical formula c23h31no3 molar mass 369.505 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references