Trenbolone enanthate

Trenbolone enanthate
Clinical data
Other names	Trenabol; Trenbolone heptanoate; 19-Nor-δ9,11-testosterone 17β-enanthate; Estra-4,9,11-trien-17β-ol-3-one 17β-enanthate
Routes of; administration	Intramuscular injection
Drug class	Androgen; Anabolic steroid; Androgen ester; Progestogen
Identifiers
	IUPAC name [(8S,13S,14S,17S)-13-Methyl-3-oxo-2,6,7,8,14,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl] heptanoate;
CAS Number	1629618-98-9;
PubChem CID	20112041;
ChemSpider	16788271;
UNII	FF02TM6THR;
Chemical and physical data
Formula	C25H34O3
Molar mass	382.544 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CCCCCCC(=O)O[C@H]1CC[C@@H]2[C@@]1(C=CC3=C4CCC(=O)C=C4CC[C@@H]23)C;
	InChI InChI=1S/C25H34O3/c1-3-4-5-6-7-24(27)28-23-13-12-22-21-10-8-17-16-18(26)9-11-19(17)20(21)14-15-25(22,23)2/h14-16,21-23H,3-13H2,1-2H3/t21-,22+,23+,25+/m1/s1; Key:HGSFRISGULOJBX-FVEXOFTDSA-N;

Trenbolone enanthate, known by the nickname Trenabol, is a synthetic and injected anabolic–androgenic steroid (AAS) and a derivative of nandrolone which was never marketed.^[1]^[2] It is the C17β enanthate ester and a long-acting prodrug of trenbolone.^[1] Trenbolone enanthate was never approved for medical or veterinary use but is used in scientific research^[3]^[4] and has been sold on the internet black market as a designer steroid for bodybuilders and athletes.^[5]

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Structural properties of major anabolic steroid esters
Anabolic steroid	Structure	Ester				Relative mol. weight	Relative AAS content^b	Duration^c
Anabolic steroid	Structure	Position	Moiety	Type	Length^a	Relative mol. weight	Relative AAS content^b	Duration^c
Boldenone undecylenate		C17β	Undecylenic acid	Straight-chain fatty acid	11	1.58	0.63	Long
Drostanolone propionate		C17β	Propanoic acid	Straight-chain fatty acid	3	1.18	0.84	Short
Metenolone acetate		C17β	Ethanoic acid	Straight-chain fatty acid	2	1.14	0.88	Short
Metenolone enanthate		C17β	Heptanoic acid	Straight-chain fatty acid	7	1.37	0.73	Long
Nandrolone decanoate		C17β	Decanoic acid	Straight-chain fatty acid	10	1.56	0.64	Long
Nandrolone phenylpropionate		C17β	Phenylpropanoic acid	Aromatic fatty acid	– (~6–7)	1.48	0.67	Long
Trenbolone acetate		C17β	Ethanoic acid	Straight-chain fatty acid	2	1.16	0.87	Short
Trenbolone enanthate^d		C17β	Heptanoic acid	Straight-chain fatty acid	7	1.41	0.71	Long
Footnotes: ^a = Length of ester in carbon atoms for straight-chain fatty acids or approximate length of ester in carbon atoms for aromatic fatty acids. ^b = Relative androgen/anabolic steroid content by weight (i.e., relative androgenic/anabolic potency). ^c = Duration by intramuscular or subcutaneous injection in oil solution. ^d = Never marketed. Sources: See individual articles.

References

^ ^a ^b William Llewellyn (2011). Anabolics. Molecular Nutrition Llc. pp. 724–. ISBN 978-0-9828280-1-4.
^ Underground Anabolics. Molecular Nutrition Llc. pp. 120–. ISBN 978-0-9828280-7-6.
^ Dalbo VJ, Roberts MD, Mobley CB, Ballmann C, Kephart WC, Fox CD, Santucci VA, Conover CF, Beggs LA, Balaez A, Hoerr FJ, Yarrow JF, Borst SE, Beck DT (2016). "Testosterone and trenbolone enanthate increase mature myostatin protein expression despite increasing skeletal muscle hypertrophy and satellite cell number in rodent muscle". Andrologia. doi:10.1111/and.12622. PMID 27246614.
^ Ye F, McCoy SC, Yarrow JF, Conover CF, Beck DT, Beggs LA, Tillman MD (2013). "Effect of Trenbolone enanthate on protein degradation in levator ani/bulbocavernosus (LABC) muscle in orchiectomized rats". The FASEB Journal. 27: 939–15. doi:10.1096/fasebj.27.1_supplement.939.15.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ El Osta R, Almont T, Diligent C, Hubert N, Eschwège P, Hubert J (2016). "Anabolic steroids abuse and male infertility". Basic Clin Androl. 26: 2. doi:10.1186/s12610-016-0029-4. PMC 4744441. PMID 26855782.{{cite journal}}: CS1 maint: unflagged free DOI (link)