Bolandiol dipropionate (USAN) (brand names Anabiol, Storinal; former developmental code name SC-7525), or bolandiol propionate (JAN), also known as norpropandrolate or 19-nor-4-androstenediol dipropionate, as well as estr-4-ene-3β,17β-diol 3,17-dipropionate, is a synthetic anabolic-androgenic steroid (AAS) and derivative of 19-nortestosterone (nandrolone).[1] It is an androgen ester – specifically, the 3,17-dipropionate ester of bolandiol (19-nor-4-androstenediol).