oxycodegol oxycodegol oxycodegol (also known as loxicodegol and nktr-181) is an experimental μ-opioid receptor agonist for the treatment of pain. it has had success for back pain as an alternative to traditional opioids, which have potential for abuse. it acts more slowly on the central nervous system, reducing risk for abuse and respiratory depression. oxycodegol names iupac name (4r,4as,7s,7ar,12bs)-9-methoxy-7-ethoxy]ethoxy]ethoxy]ethoxy]-3-methyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuroisoquinolin-4a-ol other names loxicodegol; nktr-181 identifiers cas number 1211231-76-3 n 3d model (jsmol) interactive image drugbank db14146 iuphar/bps 10652 kegg d11424 pubchem cid 73673720 unii j2wiv0jmml inchi inchi=1s/c31h49no10/c1-32-9-8-30-27-23-4-5-24(35-3)28(27)42-29(30)25(6-7-31(30,33)26(32)22-23)41-21-20-40-19-18-39-17-16-38-15-14-37-13-12-36-11-10-34-2/h4-5,25-26,29,33h,6-22h2,1-3h3/t25-,26+,29-,30-,31+/m0/s1key: rqhilgkaoiguhu-xplsernmsa-n smiles cn1cc234(cc2(1cc5=c3c(=c(c=c5)oc)o4)o)occoccoccoccoccoccoc properties chemical formula c31h49no10 molar mass 595.730 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references