finrozole finrozole finrozole is an aromatase (cyp19a1) inhibitor. finrozole names preferred iupac name 4-benzonitrile identifiers cas number 160146-17-8 y 3d model (jsmol) interactive image chembl chembl2218882 chemspider 5293483 echa infocard 100.219.051 pubchem cid 6918277 unii 40028khq6b y comptox dashboard (epa) dtxsid90166806 inchi inchi=1s/c18h15fn4o/c19-16-7-3-13(4-8-16)9-17(24)18(23-12-21-11-22-23)15-5-1-14(10-20)2-6-15/h1-8,11-12,17-18,24h,9h2/t17-,18+/m0/s1key: sljzvzkqyskynv-zwkotpchsa-n smiles c1=cc(=cc=c1c((c2=cc=c(c=c2)c#n)n3c=nc=n3)o)f properties chemical formula c18h15fn4o molar mass 322.343 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references