| dyhdrogesterone |
| 10α-pregna-4,6-diene-3,20-dione |
| (9β,10α)-pregna-4,6-diene-3,20-dione |
| 9β,10α-Pregna-4,6-diene-3,20-dione |
| 9-beta,10-alpha-pregna-4,6-diene-3,20-dione |
| 10alpha-isopregnenone |
| 6-dehydro-9beta,10alpha-progesterone |
| 6-dehydro-retro-progesterone |
| 6-dehydroretroprogesterone |
| 9beta,10alpha-pregna-4,6-diene-3,20-dione |
| delta(6)-retroprogesterone |
| delta(sup 6)-retroprogesterone |
| diphaston |
| dufaston |
| duphaston |
| duvaron |
| dydrogesterone |
| gestatron |
| gynorest |
| hydrogesterone |
| hydrogestrone |
| isopregnenone |
| 20-dione, (9-beta,10-alpha)-pregna-6-diene-3 |
| 20-dione, (9beta,10alpha)-pregna-6-diene-3 |
| prodel |
| retro-6-dehydroprogesterone |
| retrone |
| 6-dehydro-retroprogesteron |
| terolut |
