Testosterone is the principal male androgenic hormone & has the chemical formula: C19H28O2. Testosterone is an androstanoid whose chemical structure has 2 cycloalkane rings fused into a polycyclic structure that consists of the 2 cyclohexanes along with 1 cyclohexene & one cyclopentane ring. The outer cyclohexene ring has a ketone functional group (C=O) at the carbon 3 position. The overall structure is relatively planar due to the arrangement of its fused rings.
Testosterone's molecular structure is typical of steroid hormones derived from cholesterol and shares a similar ring motif. Testosterone is synthesized primarily in male testes while females produce smaller amounts in their ovaries and adrenal glands.
Compare testosterone's structure to cholesterol, estradiol, progesterone & cortisone.
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