Levonorgestrel is a synthetic progestogen that exhibits contraceptive activity, inhibiting secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Levonorgestrel is clinically used in hormonal contraceptives and hormone replacement therapy. In vitro, levonorgestrel increases expression of 17-β hydroxysteroid dehydrogenase.
| Cas No. | 797-63-7 |
|---|---|
| Purity | ≥98% |
| Formula | C21H28O2 |
| Formula Wt. | 312.45 |
| Chemical Name | 17-Ethynyl-18-methyl-19-nortestosterone |
| IUPAC Name | (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one |
| Synonym | D(−) Norgestrel; Microlut; Microval; Norgeston; Norlevo; Norplant |
| Melting Point | 235-237°C |
| Solubility | Insoluble in water. Slightly soluble in alcohol. |
| Appearance | White Crystal Powder |
| Store Temp | Ambient |
|---|---|
| Ship Temp | Ambient |
| Info Sheet | L1684 Info Sheet PDF |
|---|
Gemzell-Danielsson K, Berger C, P G L L. Emergency contraception -- mechanisms of action. Contraception. 2013 Mar;87(3):300-8. PMID: 23114735.
Yuan P, Chen B, Huang Y, et al. Long-term regression of experimental endometriosis in a rat model treated with local application of levonorgestrel-loaded biodegradable microspheres. Hum Reprod. 2012 Jul;27(7):2089-95. PMID: 22563024.
Sarkar NN. The emergency contraceptive drug, levonorgestrel: a review of post-coital oral and peri-coital vaginal administration for prevention of pregnancy. J Obstet Gynaecol. 2011 Nov;31(8):703-7. PMID: 22085058.
