estrofurate estrofurate estrofurate (inn, usan) (developmental code name ay-11483), also known as 17α-(3-furyl)-estra-1,3,5(10),7-tetraene-3,17-diol 3-acetate, is a synthetic, steroidal estrogen that was synthesized in 1967 and studied in the late 1960s and early 1970s but was never marketed. it is a relatively weak estrogen in bioassays. estrofurateidentifiers iupac name phenanthren-3-yl] acetate cas number10322-73-3pubchem cid66360chemspider59738unii0cde7t54kwkeggd04069chemblchembl2104224comptox dashboard (epa)dtxsid60883114 chemical and physical dataformulac24h26o4molar mass378.468 g·mol−13d model (jsmol)interactive image smiles cc(=o)oc1=cc2=c(c=c1)c3ccc4(c(c3=cc2)ccc4(c5=coc=c5)o)c inchi inchi=1s/c24h26o4/c1-15(25)28-18-4-6-19-16(13-18)3-5-21-20(19)7-10-23(2)22(21)8-11-24(23,26)17-9-12-27-14-17/h4-6,9,12-14,20,22,26h,3,7-8,10-11h2,1-2h3/t20-,22+,23+,24-/m1/s1key:aevuurwldcelov-ayvpjycdsa-n