Methyltrienolone is an orally active anabolic-androgen steroid being a 17α-alkylated nandrolone (19-nortestosterone) derivative. It is not sold as a prescription drug and a dietary supplement due to its strong androgenic side effects and liver toxicity. However, it is often used as the reference point for in vitro biological activity for biochemical studies. It can bind strongly to the androgen receptor and can be used as an affinity label of the androgen receptor in the prostate and in prostatic tumors. Chemical Properties Pale Yellow Solid Uses An anabolic steroid.