(3S,5S,8R,9R,10S,13S,14S,17R)-17-ethynyl-13-methyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol;Norethindrone Impurity 6;3β,5α-Tetrahydronorethisterone;3β,5a-Tetrahydronorethisterone;3β,5α-Tetrahydronorethisterone, CAS 6424-05-1
A 3β-metabolite of progesterone receptor agonist Norethindrone (N676000) that acts as a estrogen receptor agonist in osteoblastic cells. It also has novel nongenomic endothelium-independent vasorelaxing effects.
