Etonogestrel

Etonogestrel is a progesterone and androgen receptor antagonist (IC50s = 0.51 and 0.12 nM for isolated rabbit uterus and rat prostate cells, respectively) and an active metabolite of the synthetic progestogen desogestrel (Cay-23651). It increases endometrial and myometrial vascularization, uterine weight, and uterine artery length, as well as decreases the number of hormone-secreting corpus luteal glands in non-ovariectomized guinea pigs when administered subcutaneously as a 1 mm sustained-release pellet. Formulations containing etonogestrel have been used in contraceptives to prevent pregnancy.Formal Name: (17alpha)-13-ethyl-17-hydroxy-11-methylene-18,19-dinorpregn-4-en-20-yn-3-one. CAS Number: 54048-10-1. Synonyms: ORG 3236, 3-keto Desogestrel, 3-oxo Desogestrel. Molecular Formula: C22H28O2. Formula Weight: 324.5. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: Acetonitrile: 1 mg/ml, Ethanol: 1 mg/ml, Methanol: 1 mg/ml. lambdamax: 239 nm. SMILES: O[C@@]1(C#C)CC[C@@]([C@]1(CC)C2)([H])[C@]3([H])CCC4=CC(CC[C@]4([H])[C@@]3([H])C2=C)=O. InChi Code: InChI=1S/C22H28O2/c1-4-21-13-14(3)20-17-9-7-16(23)12-15(17)6-8-18(20)19(21)10-11-22(21,24)5-2/h2,12,17-20,24H,3-4,6-11,13H2,1H3/t17-,18-,19-,20+,21-,22-/m0/s1. InChi Key: GCKFUYQCUCGESZ-BPIQYHPVSA-N.