Methandrostenolon (or also methandienone) is substantially 17-alkylated derivative of testosterone with a double bond between the first and second carbon. It binds weakly to androgen receptors and therefore falls within the so-called steroids of II. Type. However, it compensates for the longer half-life and weak affinity for SHBG (binding globulin to sex hormones).It is by far the most popular steroid, and many athletes consider him the best steroid ever produced.