Pregnane, also known as 17β-ethylandrostane or as 10β,13β-dimethyl-17β-ethylgonane, is a C21 steroid and, indirectly, a parent of progesterone. It is a parent hydrocarbon for two series of steroids stemming from 5α-pregnane (originally allopregnane) and 5β-pregnane (17β-ethyletiocholane). It has a gonane core.
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||288.511 g/mol|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Pregnanes are steroid derivatives with carbons present at positions 1 through 21.
Pregnenes have a double bond. Examples include:
Pregnadienes have two double bonds. Examples include:
- Media related to Pregnane at Wikimedia Commons
- Pregnanes at the US National Library of Medicine Medical Subject Headings (MeSH)
- Diagram at qmul.ac.uk
- Definition of Pregnane
- Progesterone Chemistry
- Progesterone record in European Bioinformatics database
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