Androstanedione

**Semantic type:** Organic Chemical

**Definition:** A steroid hormone that is a mixture of alpha and beta isomers, which have different orientations for the hydrogen group at position 5. 5alpha-androstanedione is a metabolic precursor for both testosterone and estrone.

**Synonyms:** - Androstane-3,17-Dione - DIHYDROANDROSTENEDIONE - Dihydroandrostenedione - Etiocholane-3,17-Dione