# List of progestogens

This is a list of progestogens that are or that have been used in clinical or veterinary medicine. They are steroids and include derivatives of progesterone and testosterone.

## Progesterone derivatives

| Compound | Chemical name | Structure |
| Progesterone | Pregn-4-ene-3,20-dione | |
| Quingestrone | Progesterone 3-cyclopentyl enol ether | |

### Retroprogesterone derivatives

| Compound | Chemical name |
| Retroprogesterone | 9β,10α-Progesterone |
| Dydrogesterone | 6-Dehydro-9β,10α-progesterone |
| Trengestone | 6-Chloro-1,6-didehydro-9β,10α-progesterone |
Note that although an active progestogen, retroprogesterone is not medically used.

### 17α-Hydroxyprogesterone derivatives

| Compound | Chemical name |
| Hydroxyprogesterone | 17α-Hydroxyprogesterone |
| Acetomepregenol (mepregenol diacetate) | 3β,17α-Diacetoxy-6-methyl-6-dehydro-3-deketoprogesterone |
| Algestone | 16α,17α-Dihydroxyprogesterone |
| Algestone acetophenide | 16α,17α-Dihydroxyprogesterone acetophenide |
| Anagestone acetate | 17α-Acetoxy-6α-methyl-3-deketoprogesterone |
| Chlormadinone acetate | 17α-Acetoxy-6-chloro-6-dehydroprogesterone |
| Chlormethenmadinone acetate | 17α-Acetoxy-6-chloro-16-methylene-6-dehydroprogesterone |
| Cyproterone acetate | 17α-Acetoxy-1,2α-methylene-6-chloro-6-dehydroprogesterone |
| Delmadinone acetate | 17α-Acetoxy-6-chloro-1,6-didehydro-progesterone |
| Flugestone acetate (flurogestone acetate) | 17α-Acetoxy-9α-fluoro-11β-hydroxyprogesterone |
| Flumedroxone acetate | 17α-Acetoxy-6α-(trifluoromethyl)progesterone |
| Hydroxyprogesterone acetate | 17α-Acetoxyprogesterone |
| Hydroxyprogesterone caproate | 17α-Hexanoxyprogesterone |
| Hydroxyprogesterone heptanoate | 17α-Heptanoxyprogesterone |
| Medroxyprogesterone acetate | 17α-Acetoxy-6α-methylprogesterone |
| Megestrol acetate | 17α-Acetoxy-6-methyl-6-dehydroprogesterone |
| Melengestrol acetate | 17α-Acetoxy-16-methylene-6-methyl-6-dehydroprogesterone |
| Methenmadinone acetate | 17α-Acetoxy-16-methylene-6-dehydroprogesterone |
| Osaterone acetate | 17α-Acetoxy-6-chloro-2-oxa-6-dehydroprogesterone |
| Pentagestrone acetate | 17α-Acetoxyprogesterone 3-cyclopentyl enol ether |
Note that 17α-hydroxyprogesterone is inactive as a progestogen and is not used medically.
The 19-norprogesterone derivatives gestonorone caproate (gestronol hexanoate), nomegestrol acetate, segesterone acetate (nestorone, elcometrine), and norgestomet are also derivatives of 17α-hydroxyprogesterone (see below).

### 17α-Methylprogesterone derivatives

| Compound | Chemical name | Structure |
| 17α-Methylprogesterone | 17α-Methylprogesterone | |
| Medrogestone | 6,17α-Dimethyl-6-dehydroprogesterone | |
Note that although an active progestogen, 17α-methylprogesterone is not medically used.
The 19-norprogesterone derivatives demegestone, promegestone, and trimegestone are also derivatives of 17α-methylprogesterone (see below).

### Other 17α-substituted progesterone derivatives

| Compound | Chemical name | Structure |
| Haloprogesterone | 6α-Fluoro-17α-bromoprogesterone | |
| Proligestone | 14α,17α-Propylidenedioxyprogesterone | |

### 19-Norprogesterone derivatives

| Compound | Chemical name |
| 19-Norprogesterone | 19-Norprogesterone |
| Demegestone | 17α-Methyl-9-dehydro-19-norprogesterone |
| Gestonorone caproate (gestronol hexanoate) | 17α-Caproxy-19-norprogesterone |
| Nomegestrol acetate | 17α-Acetoxy-6-methyl-6-dehydro-19-norprogesterone |
| Norgestomet | 17α-Acetoxy-11β-methyl-19-norprogesterone |
| Promegestone | 17α,21-Dimethyl-9-dehydro-19-norprogesterone |
| Segesterone acetate (nestorone, elcometrine) | 17α-Acetoxy-16-methylene-19-norprogesterone |
| Trimegestone | 21β-Hydroxy-17α,21-dimethyl-9-dehydro-19-norprogesterone |
Note that although an active progestogen, 19-norprogesterone is not medically used.

## Testosterone derivatives

| Compound | Chemical name(s) | Structure |
| Testosterone | 17β-Deacetyl-17β-hydroxyprogesterone Androst-4-en-17β-ol-3-one | |
Note that testosterone itself does not have significant progestogenic activity. Testosterone is instead classified as an anabolic-androgenic steroid and is included here purely because it is the parent structure of this group of progestins.

### 17α-Ethynyltestosterone derivatives

| Compound | Chemical name(s) |
| Ethisterone (ethinyltestosterone) | 17α-Ethynyltestosterone |
| Danazol (2,3-isoxazolethisterone) | 2,3-Isoxazol-17α-ethynyltestosterone$^?$ |
| Dimethisterone | 6α,21-Dimethyl-17α-ethynyltestosterone |

### 19-Nortestosterone derivatives

| Compound | Chemical name(s) | Structure |
| Nandrolone (nortestosterone) | 19-Nortestosterone | |
| Oxendolone (TSAA-291) | 16β-Ethyl-19-nortestosterone | |
Note that while nandrolone (19-nortestosterone) does have significant progestogenic activity, it is not used as a progestogen. It is instead classified as an androgenic-anabolic steroid and is included here purely because it is an important parent structure of this group of progestins.

### 17α-Ethynyl-19-nortestosterone derivatives
#### Estranes

| Compound | Chemical name(s) |
| Norethisterone (norethindrone) | 17α-Ethynyl-19-nortestosterone |
| Etynodiol diacetate (ethynodiol diacetate) | 17α-Ethynyl-3-deketo-3β-hydroxy-19-nortestosterone 3β,17β-diacetate |
| Lynestrenol (3-deketonorethisterone) | 17α-Ethynyl-3-deketo-19-nortestosterone |
| Norethisterone acetate (norethindrone acetate) | 17α-Ethynyl-19-nortestosterone 17β-acetate |
| Norethisterone enanthate (norethindrone enanthate) | 17α-Ethynyl-19-nortestosterone 17β-enanthate |
| Noretynodrel (norethynodrel) | 17α-Ethynyl-δ$^{5(10)}$-19-nortestosterone |
| Norgestrienone (ethinyltrenbolone) | 17α-Ethynyl-19-nor-δ$^{9,11}$-testosterone |
| Quingestanol acetate | 4-Hydro-17α-ethynyl-19-nor-δ$^{3,5}$-testosterone 3-cyclopentyl ether 17β-acetate$^?$ |
| Tibolone (7α-methylnoretynodrel) | 7α-Methyl-17α-ethynyl-19-nor-δ$^{5(10)}$-testosterone |

#### 18-Methylestranes (13β-ethylgonanes)

| Compound | Chemical name(s) |
| Desogestrel | 3-Deketo-11-methylene-17α-ethynyl-18-methyl-19-nortestosterone |
| Etonogestrel (3-ketodesogestrel) | 11-Methylene-17α-ethynyl-18-methyl-19-nortestosterone |
| Gestodene (15-dehydronorgestrel) | 17α-Ethynyl-18-methyl-19-nor-δ$^{15}$-testosterone |
| Gestrinone (ethylnorgestrienone, R-2323) | 17α-Ethynyl-18-methyl-19-nor-δ$^{9,11}$-testosterone |
| Levonorgestrel | 17α-Ethynyl-18-methyl-19-nortestosterone |
| Norelgestromin (17β-deacetylnorgestimate, norgestrel 3-oxime) | 17α-Ethynyl-18-methyl-19-nortestosterone 3-oxime |
| Norgestimate | 17α-Ethynyl-18-methyl-19-nortestosterone 3-oxime 17β-acetate |
| Norgestrel (13-methylnorethisterone) | rac-13-Ethyl-17α-ethynyl-19-nortestosterone |

### Other 17α-substituted 19-nortestosterone derivatives

| Compound | Chemical name(s) |
| Allylestrenol (allyloestrenol) | 3-Deketo-17α-allyl-19-nortestosterone |
| Altrenogest (allyltrenbolone, allyltrienolone) | 17α-Allyl-19-nor-δ$^{9,11}$-testosterone |
| Dienogest | 17α-Cyanomethyl-19-nor-δ$^9$-testosterone |
| Normethandrone (methylestrenolone, normethandrolone, normethisterone, methylnortestosterone) | 17α-Methyl-19-nortestosterone |
| Norvinisterone (vinylnortestosterone, SC-4641) | 17α-Vinyl-19-nortestosterone |
| Norgesterone (norvinodrel, vinylestrenolone, vinylnoretynodrel) | 17α-Vinyl-δ$^{5(10)}$-19-nortestosterone |

## Spirolactone derivatives

| Compound | Chemical name(s) | Structure |
| SC-5233 (spirolactone) | 17α-(2-Carboxyethyl)testosterone γ-lactone | |
| Drospirenone | 6β,7β:15β,16β-Dimethylenespirolactone | |
Note that although an active progestogen, SC-5233 (spirolactone) is not medically used.