quinbolone quinbolone quinbolone (inn, usan), sold under the brand names anabolicum and anabolvis, is an androgen and anabolic steroid (aas) which was previously marketed in italy. it was developed by parke-davis as a viable orally administered aas with little or no liver toxicity. quinboloneclinical datatrade namesanabolicum, anabolvisother namesmk-810; δ1-testosterone 17β-cyclopent-1-enyl enol ether; 1-dehydrotestosterone 17β-cyclopent-1-enyl ether; 17β-(1-cyclopenten-1-yloxy)androsta-1,4-dien-3-one; androsta-1,4-dien-17β-ol-3-one 17β-(1-cyclopent-1-ene)pregnancycategory x routes ofadministrationby mouthatc codea14aa06 (who) legal statuslegal status ca: schedule iv us: schedule iii pharmacokinetic datametabolismliverexcretionurineidentifiers iupac name (8r,9s,10r,13s,14s,17s)-17-(1-cyclopentenyloxy)-10,13-dimethyl- 6,7,8,9,11,12,14,15,16,17-decahydrocyclopentaphenanthren-3-one cas number2487-63-0 ypubchem cid10360683chemspider8536132 yuniiw59598kwlxkeggd05674 ycomptox dashboard (epa)dtxsid20179580 chemical and physical dataformulac24h32o2molar mass352.518 g·mol−13d model (jsmol)interactive image smiles o=c\1\c=c/5(/c(=c/1)cc35cc4((o/c2=c/ccc2)cc34)c)c inchi inchi=1s/c24h32o2/c1-23-13-11-17(25)15-16(23)7-8-19-20-9-10-22(26-18-5-3-4-6-18)24(20,2)14-12-21(19)23/h5,11,13,15,19-22h,3-4,6-10,12,14h2,1-2h3/t19-,20-,21-,22-,23-,24-/m0/s1 ykey:iuvkmzgduiuocp-btnsxgmbsa-n y (verify) pharmacology most orally administered anabolic steroids function by having an alkylated 17α-carbon atom, which prevents first-pass metabolism by the liver. this approach however results in the aas having hepatotoxicity. quinbolone is not 17α-alkylated; instead it has increased oral bioavailability due to its cyclopentenyl ether group. after ingestion, the inactive quinbolone is transformed into boldenone. quinbolone itself has very few androgenic effects, and most of what it does have are a result of its conversion to boldenone and its metabolites. because of high doses necessary for androgenic effects, cost and inconvenience meant that quinbolone never proved to be commercially successful, and its clinical applications were fulfilled by alternative, more effective, aas. its illicit usage in bodybuilding and athletics likewise proved limited, though drug tests are still used to detect its metabolites as it remains a banned substance for most competitive sports. quinbolone, via boldenone, can be transformed into estrogens, and hence may have some estrogenic activity. side effects