17-Ketosteroid

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Steroid skeleton. Carbons 18 and above can be absent.
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Steroid skeleton. Carbons 18 and above can be absent.
Androstenedione
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Androstenedione
Androsterone
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Androsterone
Estrone
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Estrone

A 17-ketosteroid is a steroid that has a ketone (C=O) functional group at the 17 position (in the upper right corner of most diagrams.)

Examples of 17-ketosteroids include:

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