. "4-androstenedione is a 19-carbon steroid hormone produced in the adrenal glands and the gonads as an intermediate step in the biochemical pathway that produces the androgen testosterone and the estrogens estrone and estradiol."@en . "4-Androstene-3,17-dione"@en . "illicit"@en . . . . . "4-Androstenedione"@en . . . . . . . . . . . . . . . . . . "A delta-4 C19 steroid that is produced not only in the testis, but also in the ovary and the adrenal cortex. Depending on the tissue type, androstenedione can serve as a precursor to testosterone as well as estrone and estradiol. [PubChem]"@en . "63-05-8"@en . "experimental"@en . . . . . . . . . . . . . . . . . . . . "Angela M. H. Brodie, Harry J. Brodie, David A. Marsh, \"Ester derivatives of 4-hydroxy-4-androstene-3,17-dione and a method for inhibiting estrogen biosynthesis.\" U.S. Patent US4235893, issued October, 1962."@en .