Article · Wikipedia archive · Last revised Jun 22, 2026

Ketosteroid

A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.

Last revised
Jun 22, 2026
Read time
≈ 1 min
Length
106 w
Citations
Source
Steroid skeleton. Carbons 18 and above can be absent. source ↗
Androstenedione source ↗
Androsterone source ↗
Estrone source ↗

A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.

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:

17-Ketosteroids are endogenous steroid hormones.

See also

See also

External links