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Title: Ketotestosterone  
Author: World Heritage Encyclopedia
Language: English
Subject: Adrenosterone, Nordinone, Osaterone, Topterone, Rosterolone
Publisher: World Heritage Encyclopedia


CAS number  N
ChemSpider  YesY
Jmol-3D images Image 1
Image 2
Molecular formula C19H26O3
Molar mass 302.40794
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N   YesY/N?)

11-Ketotestosterone is an oxidized form of testosterone that contains a keto group at position-11. 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.


  1. ^ Nelson, Randy F. (2005). An introduction to behavioral endocrinology. Sunderland, Mass: Sinauer Associates. p. 143.  
  2. ^ Nagahama Y, Miura T, Kobayashi T (1994). "The onset of spermatogenesis in fish". Ciba Found. Symp. 182: 255–67; discussion 267–70.  

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