has role has role has parent hydride has parent hydride progesterone Akrolutin CHEBI:26269 CHEBI:28589 CHEBI:45786 PROGESTERONE Crinone 17alpha-progesterone A C<small>₂₁</small>-steroid hormone in which a pregnane skeleton carries oxo substituents at positions 3 and 20 and is unsaturated at C(4)-C(5). As a hormone, it is involved in the female menstrual cycle, pregnancy and embryogenesis of humans and other species. corpus luteum hormone (S)-Progesterone Gelbkoerperhormon chebi_ontology (S)-4-Pregnene-3,20-dione CHEBI:18798 CHEBI:17026 CHEBI:14896 Delta(4)-pregnene-3,20-dione 4-Pregnene-3,20-dione Progesterone CHEBI:8453 progesterone CHEBI:439 Progesteron (S)-Pregn-4-en-3,20-dione luteohormone Agolutin 20-oxo steroid 3-oxo-Delta(4) steroid contraceptive drug progestin C21-steroid hormone progesterone receptor agonist mouse metabolite human metabolite pregnane