1,4,6-Androstatriene-3,17-dione

1,4,6-Androstatriene-3,17-dione
Clinical data
Routes of; administration	Oral
Legal status
Legal status	US: Supplement;
Pharmacokinetic data
Metabolism	Hepatic
Elimination half-life	48 hours
Identifiers
	IUPAC name (8R,9S,10R,13S,14S)-10,13-dimethyl-9,11,12,14,15,16-hexahydro-8H-cyclopenta[a]phenanthrene-3,17-dione;
CAS Number	633-35-2;
PubChem CID	104880;
ChemSpider	94659 ;
UNII	217A6T1V8N;
ChEBI	CHEBI:131190 ;
CompTox Dashboard (EPA)	DTXSID60862328 ;
Chemical and physical data
Formula	C19H22O2
Molar mass	282 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES O=C\4\C=C/[C@]3(C(/C=C\[C@H]2[C@H]1[C@@](C(=O)CC1)(CC[C@@H]23)C)=C/4)C;
	InChI InChI=1S/C19H22O2/c1-18-9-7-13(20)11-12(18)3-4-14-15-5-6-17(21)19(15,2)10-8-16(14)18/h3-4,7,9,11,14-16H,5-6,8,10H2,1-2H3/t14-,15-,16-,18-,19-/m0/s1 ; Key:DKVSUQWCZQBWCP-QAGGRKNESA-N ;
	(verify)

1,4,6-Androstatriene-3,17-dione (ATD) is a potent irreversible aromatase inhibitor that inhibits estrogen biosynthesis by permanently binding and inactivating aromatase in adipose and peripheral tissue.^[1] It is used to control estrogen synthesis.^[2]

ATD was present in some over-the-counter bodybuilding supplements until 2009, as well as Topical ATD solutions that work transdermally. The product was developed and commercialized in the dietary supplement market place by industry journeyman Bruce Kneller, who holds a United States Patent for use of the compound and related compounds (#7,939,517) and Gaspari Nutrition. ATD has many names in sports supplements including: 1,4,6 etiollochan-dione, 3, 17-keto-etiochol-triene, androst-1,4,6-triene-3,17-dione and many others. These all refer to CAS# 633-35-2.

ATD may cause a positive test for the anabolic steroid Boldenone, of which it is a possible metabolite and production contaminant. ATD is also prohibited in amateur and professional sports which forbids aromatase inhibitors.^[3]

A related agent is exemestane (Aromasin).

References

↑ Covey DF, Hood WF (April 1981). "Enzyme-generated intermediates derived from 4-androstene-3,6,17-trione and 1,4,6-androstatriene-3,17-dione cause a time-dependent decrease in human placental aromatase activity". Endocrinology. 108 (4): 1597–1599. doi:10.1210/endo-108-4-1597. PMID 7472286.
↑ Adkins-Regan E, Leung CH (December 2006). "Sex steroids modulate changes in social and sexual preference during juvenile development in zebra finches". Hormones and Behavior. Elsevier Inc. 50 (5): 772–778. doi:10.1016/j.yhbeh.2006.07.003. PMID 16919276. S2CID 23869106.
↑ Parr MK, Fusshöller G, Schlörer N, Opfermann G, Piper T, Rodchenkov G, Schänzer W (January 2009). "Metabolism of androsta-1,4,6-triene-3,17-dione and detection by gas chromatography/mass spectrometry in doping control". Rapid Communications in Mass Spectrometry. 23 (2): 207–218. Bibcode:2009RCMS...23..207P. doi:10.1002/rcm.3861. PMID 19089863.

References

Further reading