Norgestrel

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Norgestrel
Levonorgestrel.svg
Systematic (IUPAC) name
(8R,9S,10R,13S,14S,17S)- 13-ethyl-17-ethynyl-17-hydroxy- 1,2,6,7,8,9,10,11,12,14,15, 16- dodecahydrocyclopenta[a]phenanthren-3-one
Clinical data
AHFS/Drugs.com Micromedex Detailed Consumer Information
MedlinePlus a602008
Legal status ?
Pharmacokinetic data
Half-life 5-14 hours
Identifiers
CAS number 6533-00-2 YesY
ATC code G03AA06 G03FA10 G03FB01 (only combinations with estrogens)
PubChem CID 16051930
DrugBank DB00367
ChemSpider 10481953 YesY
UNII 3J8Q1747Z2 YesY
KEGG D00954 YesY
ChEMBL CHEMBL1389 N
Chemical data
Formula C21H28O2 
Mol. mass 312.446 g/mol
 N (what is this?)  (verify)

Norgestrel is a progestin used in hormonal contraceptives. Norgestrel is a mixture of two stereoisomers, dextro-norgestrel (CAS# 797-64-8) and levo-norgestrel (CAS# 797-63-7). Only levonorgestrel is biologically active. Therefore, while some medications may contain dextronorgestrel, they are often labeled in terms of their levonorgestrel content only, ignoring the inert isomer. It is used in the hormonal contraceptive Microgynon 30, among others.

See also[edit]