This invention relates to novel amino substituted benzonitrile derivatives and to pharmaceutical compositions containing the novel amino substituted benzonitrile derivatives. This invention also relates to methods of treatment using amino substituted benzonitrile derivatives to prevent and/or restore age-related decline in muscle mass and strength, treat a wasting disease, treat a condition that prevents with low bone mass, increase muscle mass, increase lean body mass, decrease fat body mass, and treat bone fracture and muscle damage in mammals, including humans.