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Ketosteroid
Chemical compound / From Wikipedia, the free encyclopedia
A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Trimethyl_steroid-nomenclature.png/320px-Trimethyl_steroid-nomenclature.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Androstendion.svg/150px-Androstendion.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/32/Androsteron.svg/320px-Androsteron.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Estrone_structure.svg/320px-Estrone_structure.svg.png)
![]() | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (August 2021) |
A 17-ketosteroid is a ketosteroid in which the ketone is located specifically at the C17 position (in the upper right corner of most structure diagrams).
Examples of 17-ketosteroids include:
- Androstenedione
- Androstanedione
- Androsterone
- Dehydroepiandrosterone
- Epiandrosterone
- Epietiocholanolone
- Etiocholanolone
17-Ketosteroids are endogenous steroid hormones.