Androstenedione

**Semantic type:** Hormone|Organic Chemical|Pharmacologic Substance

**Definition:** A steroid hormone synthesized by the adrenal glands and the gonads from either 17-alpha-hydroxyprogesterone or dehydroepiandrosterone and is a precursor of testosterone.

**Synonyms:** - 4-Androstene-3,17-dione - Androst-4-ene-3,17-dione - Delta-4-Androstenedione - delta4-Androstene-3,17-dione - delta4-Androstene-3,17-dione