5α-dihydronorethandrolone 5α-dihydronorethandrolone 5α-dihydronorethandrolone (5α-dhned), also known as 17α-ethyl-4,5α-dihydro-19-nortestosterone or as 17α-ethyl-5α-estran-17β-ol-3-one, is an androgen/anabolic steroid and a metabolite of norethandrolone (as well as of the prodrug ethylestrenol) formed by 5α-reductase. analogously to nandrolone and its 5α-reduced metabolite 5α-dihydronandrolone, 5α-dhned shows reduced affinity for the androgen receptor relative to norethandrolone. its affinity for the androgen receptor is specifically about 64% of that of norethandrolone. relative affinities of nandrolone and related steroids at the androgen receptor compoundrar (%)har (%) testosterone3838 5α-dihydrotestosterone77100 nandrolone7592 5α-dihydronandrolone3550 ethylestrenolnd2 norethandrolonend22 5α-dihydronorethandrolonend14 metribolone100110 sources: see template. 5α-dihydronorethandroloneclinical dataother names5α-dhned; 4,5α-dihydronorethandrolone; 3-keto-5α-dihydroethylestrenol; 17α-ethyl-5α-dihydro-19-nortestosterone; 17α-ethyl-5α-estran-17β-ol-3-one; 19-nor-5α-pregnan-17α-ol-3-oneidentifiers iupac name (5s,8r,9r,10s,13s,14s,17s)-17-ethyl-17-hydroxy-13-methyl-1,2,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydrocyclopentaphenanthren-3-one cas number2099-68-5 ypubchem cid71316183chemspider48063897uniiuya5mb8cxlcomptox dashboard (epa)dtxsid50747650 chemical and physical dataformulac20h32o2molar mass304.474 g·mol−13d model (jsmol)interactive image smiles cc1(cc21(cc32cc43ccc(=o)c4)c)o inchi inchi=1s/c20h32o2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h13,15-18,22h,3-12h2,1-2h3/t13-,15-,16+,17+,18-,19-,20-/m0/s1key:iolodvbmndjvop-xdqppubwsa-n