triphenylethanol triphenylethanol triphenylethanol, or 1,1,2-triphenylethanol, is an organic compound with a condensed structural formula of (c6h5)2c(oh)ch2c6h5, and is related to triphenylethylene, from which it can be prepared by hydration. it is the structural analog of two drugs, the never-marketed antiestrogen ethamoxytriphetol (mer-25): 7 and the withdrawn lipid-lowering agent triparanol, as both contain the 1,1,2-triphenylethanol moiety within their structure. triphenylethanol names preferred iupac name 1,1,2-triphenylethan-1-ol identifiers cas number 4428-13-1 3d model (jsmol) interactive image chembl chembl118088 chemspider 214300 pubchem cid 245013 comptox dashboard (epa) dtxsid60871076 inchi inchi=1s/c20h18o/c21-20(18-12-6-2-7-13-18,19-14-8-3-9-15-19)16-17-10-4-1-5-11-17/h1-15,21h,16h2key: qmpkjvbrcqvfll-uhfffaoysa-n smiles c1=cc=c(c=c1)cc(c2=cc=cc=c2)(c3=cc=cc=c3)o properties chemical formula c20h18o molar mass 274.363 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references there are three isomeric compounds with a "triphenylethanol" structure: 1,1,2-triphenylethanol; 1,2,2-triphenylethanol, with a condensed structural formula of (c6h5)2chch(c6h5)oh, which exists as a pair of enantiomers; and, 2,2,2-triphenylethanol, with a condensed structural formula of (c6h5)3cch2oh.