One embodiment is directed toward a method for treating an individual with a disorder affected by androgen receptor activity. This method includes administering a therapeutic amount of DL3 (6-amino-2-(2-4-tert-butyl-phenoxy)-ethylsulfanyl)-1H-pyrimidin-4-one) to the individual. In an additional embodiment, the disorder affected by androgen receptor activity includes cancer. Another embodiment is directed toward a method for treating an individual with prostate cancer. This method includes administering to the individual a therapeutic amount of an androgen receptor antagonist which reduces the production of prostate specific antigen and has only negligible androgen receptor agonist effects.