Testosterone

Testosterone is the major steroidal hormone produced by the interstitial cells of Leydig in the male testes. Lesser amounts of this hormone are produced in the adrenal glands of both sexes. Synthetic testosterone forms a white or slightly creamy white crystalline powder or crystals that are practically insoluble in water and freely soluble in alcohol, chloroform, and vegetable oils. Odorless, crystalline testosterone melts from 153 to 157 degrees Celsius.