AR and osteoporosis: 2‐Chloro‐4‐[[(1R,2R)‐2‐hydroxy‐2‐methyl‐cyclopentyl]amino]‐3‐methyl‐benzonitrile (LY305) is a transdermal selective androgen receptor modulator (SARM) that has been under development as a potential therapeutic for conditions involving muscle wasting, osteoporosis, or hypogonadism.