Tags: Chemical Compound, Chemical Substance.
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. 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.