Norgestrel
Top: levonorgestrel, bottom: dextronorgestrel | |
Clinical data | |
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AHFS/Drugs.com | Micromedex Detailed Consumer Information |
MedlinePlus | a602008 |
ATC code | G03AA06 (WHO) G03FA10 (WHO) G03FB01 (WHO) (only combinations with estrogens) |
Legal status | |
Legal status |
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Pharmacokinetic data | |
Biological half-life | 5–14 hours |
Identifiers | |
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CAS Number | 6533-00-2 |
PubChem (CID) | 16051930 |
ChemSpider | 10481953 |
UNII | 3J8Q1747Z2 |
KEGG | D00954 |
ChEBI | CHEBI:7630 |
Chemical and physical data | |
Formula | C21H28O2 |
Molar mass | 312.446 g/mol |
3D model (Jmol) | Interactive image |
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Norgestrel (INN, USAN, BAN, JAN) (brand names Logynon, Nordette, Eugynon, Microgynon, Ovran, Ovranette, Trinordiol, numerous others) is a steroidal progestin that has been used in hormonal contraceptives. It is a mixture of two stereoisomers, dextronorgestrel (CAS# 797-64-8 ) and levonorgestrel (CAS# 797-63-7 ).[1] Only levonorgestrel is biologically active.[2] Therefore, while some medications may contain dextronorgestrel, they are often labeled in terms of their levonorgestrel content only, ignoring the inert isomer.
Norgestrel has also been used as an emergency contraceptive in the Yuzpe regimen.[3]
See also
References
- ↑ Mutschler, Ernst; Schäfer-Korting, Monika (2001). Arzneimittelwirkungen (in German) (8 ed.). Stuttgart: Wissenschaftliche Verlagsgesellschaft. pp. 442f. ISBN 3-8047-1763-2.
- ↑ Benagiano, G; Carrara, S; Filippi, V (2009). "Safety, efficacy and patient satisfaction with continuous daily administration of levonorgestrel/ethinylestradiol oral contraceptives". Patient preference and adherence. 3: 131–43. PMC 2778424. PMID 19936155.
- ↑ Yuzpe, A. A.; Smith, R. P.; Rademaker, A. W. (1982). "A multicenter clinical investigation employing ethinyl estradiol combined with dl-norgestrel as postcoital contraceptive agent". Fertility and Sterility. 37 (4): 508–13. PMID 7040117.
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