From Wikipedia, the free encyclopedia
Jump to: navigation, search
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/ Micromedex Detailed Consumer Information
MedlinePlus a602008
Legal status
Pharmacokinetic data
Half-life 5-14 hours
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
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]