Testosterone Propionate is a short acting oil-based injectable formulation of testosterone. Testosterone inhibits gonadotropin secretion from the pituitary gland and ablates estrogen production in the ovaries, thereby decreasing endogenous estrogen levels.
11-Ketodihydrotestosterone is a metabolite of 11β-Hydroxyandrostenedione. It is an active androgen and is also a potent androgen receptor (AR) agonist (Ki: 20.4 nM, EC50: 1.35 nM for human AR).
6alpha-Fluorotestosterone is a synthetic nonaromatizable androgen analog of testosterone. It binds to and activates specific nuclear receptors inhibits and is equipotent to testosterone.
11α-Hydroxy Testosterone, a testosterone metabolite, is synthesized by the cytochrome P450 (CYP) isoform CYP3A.1, and can alternatively be produced from testosterone by a CYP107A1 mutant or from 11α-hydroxy progesterone by the fungus B. bassiana.2,3 The biological activity of 11α-Hydroxy Testosterone remains unclear.