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you may wish to check out:Dont know how accurate the classI classII lists are but there are def steroids that dont have to bind to the AR whatsoever to make an effect occur.
Anabolic-androgenic steroid interaction with rat androgen receptor in vivo and in vitro: a comparative study.
J Steroid Biochem Mol Biol. 2005 Apr;94(5):481-7. Epub 2005 Mar 17
Feldkoren BI, Andersson S.
Department of Obstetrics-Gynecology and Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9032, USA.
however, i don't know if similar results exist for oxymetholone as well.By use of tissue extracts, it has been shown that some anabolic steroids have binding affinities for the AR that are higher than that of the natural androgen testosterone, while others such as stanozolol and methanedienone have significantly lower affinities as compared with testosterone. In this study we show that stanozolol and methanedienone are low affinity ligands of the rat recombinant AR as revealed by a ligand binding assay in vitro, however, based on a cell-based AR-dependent transactivation assay, they are potent activators of the AR. We also show that a single injection of stanozolol and methanedienone causes a rapid cytosolic depletion of AR in rat skeletal muscle. Based on these results, we conclude that anabolic steroids with low affinity to AR in vitro, can in fact in vivo act on the AR to cause biological responses.
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