| 20-alpha-hydroxy-pregn-4-en-3-on |
| (20S)-20-hydroxypregn-4-en-3-one |
| 20(S)-hydroxyprogesterone |
| 20-alpha-dihydroprogesterone |
| 20-alpha-hydroxydihydroprogesterone |
| 20-alpha-hydroxyprogesterone |
| 20-alpha-progerol |
| dihydroprogesterone |
| (20S)-pregn-4-en-3-on |
| progesterol-20-alpha |
| 4-pregnen-20a-ol-3-one |
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