11-Ketotestosterone

11-Ketotestosterone
Names
	IUPAC name 17-Hydroxyandrost-4-ene-3,11-dione
	Other names 11-Ketotestosterone; 11-Oxotestosterone
Identifiers
CAS Number	53187-98-7 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	4445528 ;
PubChem CID	104796;
CompTox Dashboard (EPA)	DTXSID8036499 ;
	InChI InChI=1S/C19H26O3/c1-18-8-7-12(20)9-11(18)3-4-13-14-5-6-16(22)19(14,2)10-15(21)17(13)18/h9,13-14,16-17,22H,3-8,10H2,1-2H3/t13-,14-,16-,17+,18-,19-/m0/s1 Key: WTPMRQZHJLJSBO-XQALERBDSA-N ; InChI=1/C19H26O3/c1-18-8-7-12(20)9-11(18)3-4-13-14-5-6-16(22)19(14,2)10-15(21)17(13)18/h9,13-14,16-17,22H,3-8,10H2,1-2H3/t13-,14-,16-,17+,18-,19-/m0/s1 Key: WTPMRQZHJLJSBO-XQALERBDBO;
	SMILES CC12CCC(=O)C=C1CCC3C2C(=O)CC4(C3CCC4O)C; O=C2C[C@]4([C@H]([C@@H]3CC\C1=C\C(=O)CC[C@]1(C)[C@@H]23)CC[C@@H]4O)C;
Properties
Chemical formula	C19H26O3
Molar mass	302.40794
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

11-Ketotestosterone (11-KT) is an oxidized form of testosterone that contains a keto group at the C11 position. It is related to adrenosterone, an androgen found in trace quantities in humans. In fish, 11-ketotestosterone functions as the endogenous androgenic sex hormone.[1][2] In midshipman fish, 11-ketotestosterone is not present in females or Type II Males — Type II Males reach sexual maturation later, are less territorial, and have higher testosterone than Type I Males.

In mammals, 11-ketotestosterone has similar potency to testosterone as an androgen, and has been identified as an important adrenal androgen.[3] It is synthesized from 11β-hydroxyandrostenedione and, to a lesser extent, 11-ketoandrostenedione (adrenosterone).[3] 11-Ketoandrostenedione has notably been sold online as an androgen prohormone, usually under the name 11-oxoandrostenedione (11-OXO).[3]

References

Nelson, Randy F. (2005). An introduction to behavioral endocrinology. Sunderland, Mass: Sinauer Associates. p. 143. ISBN 0-87893-617-3.
Nagahama Y, Miura T, Kobayashi T (1994). "The onset of spermatogenesis in fish". Ciba Found. Symp. Novartis Foundation Symposia. 182: 255–67, discussion 267–70. doi:10.1002/9780470514573.ch14. ISBN 9780470514573. PMID 7835154.
Pretorius, Elzette; Arlt, Wiebke; Storbeck, Karl-Heinz (2016). "A new dawn for androgens: Novel lessons from 11-oxygenated C19 steroids" (PDF). Molecular and Cellular Endocrinology. 441: 76–85. doi:10.1016/j.mce.2016.08.014. ISSN 0303-7207. PMID 27519632.

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[isbn0-87893-617-3-1] Nelson, Randy F. (2005). An introduction to behavioral endocrinology. Sunderland, Mass: Sinauer Associates. p. 143. ISBN 0-87893-617-3.

[pmid7835154-2] Nagahama Y, Miura T, Kobayashi T (1994). "The onset of spermatogenesis in fish". Ciba Found. Symp. Novartis Foundation Symposia. 182: 255–67, discussion 267–70. doi:10.1002/9780470514573.ch14. ISBN 9780470514573. PMID 7835154.

[PretoriusArlt2016-3] Pretorius, Elzette; Arlt, Wiebke; Storbeck, Karl-Heinz (2016). "A new dawn for androgens: Novel lessons from 11-oxygenated C19 steroids" (PDF). Molecular and Cellular Endocrinology. 441: 76–85. doi:10.1016/j.mce.2016.08.014. ISSN 0303-7207. PMID 27519632.