Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6476810.17816/kazmj64768Short CommunicationThe chemical nature of the sex hormoneT.A.info@eco-vector.com06061926225-60504202105042021Copyright © 1926, T. A.1926<p>The chemical nature of the sex hormone was studied by Gustavson (Journ. Of Am. Med. Ass., 1925) who considers it to be a specific substance, soluble in lipoids. This substance is highly resistant to high temperatures. It contains neither nitrogen nor phosphorus. In the light, it oxidizes and loses its effect. It is not an ester or a fatty acid. It does not give a reaction to cholesterol and does not contain a CO group.</p>