beta-fuoxymorphamine beta-fuoxymorphamine beta-fuoxymorphamine (β-fuoxymorphamine) is an opioid acting at μ-opioid receptors. it is used experimentally. beta-fuoxymorphamine names iupac name methyl (2e)-4--4-oxo-2-butenoate identifiers 3d model (jsmol) interactive image abbreviations β-foa chembl chembl413090 chemspider 8915841 pubchem cid 44276202 inchi inchi=1s/c22h26n2o6/c1-24-10-9-21-18-12-3-4-14(25)19(18)30-20(21)13(7-8-22(21,28)15(24)11-12)23-16(26)5-6-17(27)29-2/h3-6,13,15,20,25,28h,7-11h2,1-2h3,(h,23,26)/b6-5+/t13-,15-,20+,21+,22-/m1/s1key: vygvqurmyfvopo-iryzuvsxsa-n smiles o=c(oc)\c=c\c(=o)n45oc1c2c(ccc1o)c3n(cc253(o)cc4)c properties chemical formula c22h26n2o6 molar mass 414.458 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references