Norgestrel

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Norgestrel

Clinical data
ATC code	G03AC03 (WHO)
Pharmacokinetic data
Elimination half-life	5-14 hours
Identifiers
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
CAS Number	6533-00-2
PubChem CID	13109
DrugBank	APRD00106
E number	{{#property:P628}}
ECHA InfoCard	{{#property:P2566}}
Chemical and physical data
Formula	C21H28O2
Molar mass	312.446 g/mol

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Experimental / Informatics
List of terms related to Norgestrel

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.

See also

• Levonorgestrel
• Progestin