Equine estrogen

Short description: Estrogens found in horses

Equine estrogens, or horse estrogens, are estrogens found in horses.[1][2][3] They include the following:[1][2][3]

* Estradiol
* Estrone
* Equilin (Δ7-estrone)
* Equilenin (Δ6,8-estrone)
* 17α-Dihydroequilin (Δ7-17α-estradiol)
* 17β-Dihydroequilin (Δ7-17β-estradiol)
* 17α-Dihydroequilenin (Δ6,8-17α-estradiol)
* 17β-Dihydroequilenin (Δ6,8-17β-estradiol)
* 8,9-Dehydroestrone (Δ8-estrone)
* 8,9-Dehydroestradiol (Δ8-17β-estradiol)
* Hippulin (Δ8-14-isoestrone)

As well as their conjugates, such as estrone sulfate.

Equine estrogens are found in the human medications conjugated estrogens (Premarin) and esterified estrogens (Estratab, Menest).[1][2][3]

## See also

* List of estrogens § Equine estrogens

## References

1. ↑ 1.0 1.1 1.2 "Pharmacology of estrogens and progestogens: influence of different routes of administration". Climacteric 8 Suppl 1: 3–63. 2005. doi:10.1080/13697130500148875. PMID 16112947. http://hormonebalance.org/images/documents/Kuhl 05 Pharm Estro Progest Climacteric_1313155660.pdf.
2. ↑ 2.0 2.1 2.2 "Structure activity relationships and differential interactions and functional activity of various equine estrogens mediated via estrogen receptors (ERs) ERalpha and ERbeta". Endocrinology 149 (10): 4857–70. October 2008. doi:10.1210/en.2008-0304. PMID 18599548.
3. ↑ 3.0 3.1 3.2 "Estrogens and menopause: pharmacology of conjugated equine estrogens and their potential role in the prevention of neurodegenerative diseases such as Alzheimer's". J. Steroid Biochem. Mol. Biol. 85 (2–5): 473–82. June 2003. doi:10.1016/s0960-0760(03)00220-6. PMID 12943738.

* v
* t
* e

Estrogens and antiestrogens

Estrogens|

| ER agonists|

* Steroidal: Alfatradiol
* Certain androgens/anabolic steroids (e.g., testosterone, testosterone esters, methyltestosterone, metandienone, nandrolone esters) (via estrogenic metabolites)
* Certain progestins (e.g., norethisterone, noretynodrel, etynodiol diacetate]], tibolone)
* Clomestrone
* Cloxestradiol acetate
* Conjugated estriol
* Conjugated estrogens
* Epiestriol
* Epimestrol
* Esterified estrogens
* Estetrol†
* Estradiol
* Estradiol esters (e.g., estradiol acetate, estradiol benzoate, estradiol cypionate, estradiol enanthate, estradiol undecylate, [[Chemistry:Estradiol estradiol valerate, Polyestradiol phosphate|polyestradiol phosphate]], estradiol ester mixtures (Climacteron))
* Estramustine phosphate
* Estriol
* Estriol esters (e.g., estriol succinate, polyestriol phosphate)
* Estrone
* Estrone esters
* Estrone sulfate
* Estropipate (piperazine estrone sulfate)
* Ethinylestradiol#
* Ethinylestradiol sulfonate
* Hydroxyestrone diacetate
* Mestranol
* Methylestradiol
* Moxestrol
* Nilestriol
* Prasterone (dehydroepiandrosterone; DHEA)
* Prasterone enanthate
* Prasterone sulfate
* Promestriene
* Quinestradol
* Quinestrol

* Nonsteroidal: Benzestrol
* Bifluranol
* Chlorotrianisene
* Dienestrol
* Dienestrol diacetate
* Diethylstilbestrol (stilbestrol)
* Diethylstilbestrol esters/ethers
* Dimestrol (diethylstilbestrol dimethyl ether)
* Fosfestrol (diethylstilbestrol diphosphate)
* Mestilbol (diethylstilbestrol monomethyl ether)
* Doisynoestrol (fenocycline)
* Hexestrol
* Hexestrol esters
* Methallenestril
* Methestrol dipropionate (promethestrol dipropionate)
* Paroxypropione
* Quadrosilan
* Triphenylbromoethylene
* Triphenylchloroethylene
* Zeranol

|

Progonadotropins|

* Antiandrogens (e.g., bicalutamide)
* GnRH agonists (e.g., GnRH (gonadorelin), leuprorelin)
* Gonadotropins (e.g., FSH, LH)

Antiestrogens|

| ER antagonists
(incl. SERMs/SERDs)|

* Acolbifene†
* Anordrin
* Bazedoxifene
* Broparestrol
* Clomifene#
* Cyclofenil
* Enclomifene†
* Epitiostanol
* Lasofoxifene
* Mepitiostane
* Ormeloxifene
* Ospemifene
* Raloxifene
* Tamoxifen#
* Toremifene

* Exclusively antagonistic: Fulvestrant

|

Aromatase inhibitors|

* First-generation: Aminoglutethimide
* Testolactone

* Second-generation: Fadrozole
* Formestane

* Third-generation: Anastrozole
* Exemestane
* Letrozole

Antigonadotropins|

* Androgens/Anabolic steroid|Anabolic steroid|Anabolic steroid]]]]s (e.g., testosterone, testosterone esters, nandrolone esters, oxandrolone, fluoxymesterone)
* D2 receptor antagonists (prolactin releasers) (e.g., domperidone, metoclopramide, risperidone, haloperidol, chlorpromazine, sulpiride)
* GnRH agonists (e.g., leuprorelin, goserelin)
* GnRH antagonists (e.g., cetrorelix, elagolix)
* Progestogens (e.g., chlormadinone acetate, cyproterone acetate, gestonorone caproate, hydroxyprogesterone caproate, [[Chemistry:Medroxyprogesterone medroxyprogesterone acetate, Chemistry:Megestrol acetate|megestrol acetate]])

Others|

* Mixed mechanism of action: Danazol
* Gestrinone

* Androstenedione immunogens: Androvax (androstenedione albumin)
* Ovandrotone albumin (Fecundin)

* #WHO-EM
* ‡Withdrawn from market
* Clinical trials:
* †Phase III
* §Never to phase III

See also
Estrogen receptor modulators
Androgens and antiandrogens
Progestogens and antiprogestogens
List of estrogens

* v
* t
* e

Estrogen receptor modulators

ER|

| Agonists|

* Steroidal: 2-Hydroxyestradiol
* 2-Hydroxyestrone
* 3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol
* 3α-Androstanediol
* 3α,5α-Dihydrolevonorgestrel
* 3β,5α-Dihydrolevonorgestrel
* 3α-Hydroxytibolone
* 3β-Hydroxytibolone
* 3β-Androstanediol
* 4-Androstenediol
* 4-Androstenedione
* 4-Hydroxyestradiol
* 4-Hydroxyestrone
* 4-Methoxyestradiol
* 4-Methoxyestrone
* 5-Androstenediol
* 7-Oxo-DHEA
* 7α-Hydroxy-DHEA
* 7α-Methylestradiol
* 7β-Hydroxyepiandrosterone
* 8,9-Dehydroestradiol
* 8,9-Dehydroestrone
* 8β-VE2
* 10β,17β-Dihydroxyestra-1,4-dien-3-one (DHED)
* 16α-Fluoroestradiol
* 16α-Hydroxy-DHEA
* 16α-Hydroxyestrone
* 16α-Iodoestradiol
* 16α-LE2
* 16β,17α-Epiestriol (16β-hydroxy-17α-estradiol)
* 17α-Estradiol (alfatradiol)
* 17α-Dihydroequilenin
* 17α-Dihydroequilin
* 17α-Epiestriol (16α-hydroxy-17α-estradiol)
* 17β-Dihydroequilenin
* 17β-Dihydroequilin
* Abiraterone
* Abiraterone acetate
* Alestramustine
* Almestrone
* Anabolic steroids (e.g., testosterone and esters, methyltestosterone, metandienone (methandrostenolone), nandrolone and esters, many others; via estrogenic metabolites)
* Atrimustine
* Bolandiol
* Bolandiol dipropionate
* Butolame
* Clomestrone
* Cloxestradiol
* Cloxestradiol acetate
* Conjugated estriol
* Conjugated estrogens
* Cyclodiol
* Cyclotriol
* DHEA
* DHEA-S
* Epiestriol (16β-epiestriol, 16β-hydroxy-17β-estradiol)
* Epimestrol
* Equilenin
* Equilin
* ERA-63 (ORG-37663)
* Esterified estrogens
* Estetrol
* Estradiol
* Estradiol esters
* Lipoidal estradiol
* Polyestradiol phosphate
* Estramustine
* Estramustine phosphate
* Estrapronicate
* Estrazinol
* Estriol
* Estriol esters
* Polyestriol phosphate
* Estrofurate
* Estromustine
* Estrone
* Estrone esters
* Estrone methyl ether
* Estropipate
* Etamestrol (eptamestrol)
* Ethinylestradiol
* Ethinylestradiol 3-benzoate
* Ethinylestradiol sulfonate
* Ethinylestriol
* Ethylestradiol
* Etynodiol
* Etynodiol diacetate
* Hexolame
* Hippulin
* Hydroxyestrone diacetate
* Lynestrenol
* Lynestrenol phenylpropionate
* Mestranol
* Methylestradiol
* Moxestrol
* Mytatrienediol
* Nilestriol
* Norethisterone
* Noretynodrel
* Orestrate
* Pentolame
* Prodiame
* Prolame
* Promestriene
* RU-16117
* Quinestradol
* Quinestrol
* Tibolone

* Nonsteroidal: (R,R)-THC
* (S,S)-THC
* 2,8-DHHHC
* β-LGND1
* β-LGND2 (GTx-878)
* AC-186
* Allenestrol
* Allenolic acid
* Benzestrol
* Bifluranol
* Bisdehydrodoisynolic acid
* Carbestrol
* D-15414
* DCW234
* Diarylpropionitrile
* Dienestrol
* Dienestrol diacetate
* Diethylstilbestrol
* Diethylstilbestrol esters
* Dimestrol (dianisylhexene)
* Doisynoestrol (fenocycline)
* Doisynolic acid
* Efavirenz
* ERB-196 (WAY-202196)
* Erteberel (SERBA-1, LY-500307)
* Estrobin (DBE)
* Fenestrel
* FERb 033
* Fosfestrol (diethylstilbestrol diphosphate)
* Furostilbestrol (diethylstilbestrol difuroate)
* GTx-758
* Hexestrol
* Hexestrol esters
* ICI-85966 (Stilbostat)
* Mestilbol
* Methallenestril
* Methestrol
* Methestrol dipropionate
* Paroxypropione
* Pentafluranol
* Phenestrol
* Prinaberel (ERB-041, WAY-202041)
* Propylpyrazoletriol
* Quadrosilan
* SC-4289
* SERBA-2
* SKF-82,958
* Terfluranol
* Triphenylbromoethylene
* Triphenylchloroethylene
* Triphenyliodoethylene
* Triphenylmethylethylene (triphenylpropene)
* WAY-166818
* WAY-169916
* WAY-200070
* WAY-204688 (SIM-688)
* WAY-214156

* Unknown/unsorted: ERB-26
* ERA-45
* ERB-79
* ZK-283197

* Xenoestrogens: Anise-related (e.g., anethole, anol, dianethole, dianol, photoanethole)
* Chalconoids (e.g., isoliquiritigenin, phloretin, phlorizin (phloridzin), wedelolactone)
* Coumestans (e.g., coumestrol, psoralidin)
* Flavonoids (incl. 7,8-DHF, 8-prenylnaringenin, apigenin, baicalein, baicalin, biochanin A, calycosin, catechin, daidzein, daidzin, ECG, EGCG, [[Chemistry:Epicateepicatechin, Chemistry:Equol|equol]], formononetin, glabrene, glabridin, Genistein|genistein]], genistin, glycitein, kaempferol, Chemistry:Liquiritigenin

|

Mixed
(SERMs)|

* 2-Phenylbenzofuran
* 2-Phenylbenzothiophene
* 4'-Hydroxynorendoxifen
* 27-Hydroxycholesterol
* Acefluranol
* Acolbifene
* Afimoxifene
* Anordiol
* Anordrin
* Arzoxifene
* Bazedoxifene
* Brilanestrant
* Broparestrol
* Chlorotrianisene
* Clomifene
* Clomifenoxide
* Cyclofenil
* D-15413
* Droloxifene
* Elacestrant
* Enclomifene
* Endoxifen
* Etacstil (GW-5638, DPC-974)
* Ethamoxytriphetol (MER-25)
* Femarelle
* Fispemifene
* GW-7604
* ICI-55548
* Idoxifene
* Lasofoxifene
* Levormeloxifene
* LN-1643
* LN-2299
* LY-117018
* Menerba
* Miproxifene
* Miproxifene phosphate
* Nafoxidine
* Nitromifene
* NNC 45-0095
* NNC 45-0320
* NNC 45-0781
* NNC 45-1506
* Ormeloxifene
* Ospemifene
* Panomifene
* Pipendoxifene
* Promensil
* Raloxifene
* Rimostil (P-081)
* Spironolactone
* SS1010
* Tamoxifen
* TAS-108 (SR-16234)
* Toremifene
* Trioxifene
* TZE-5323
* Y-134
* Zindoxifene
* Zuclomifene

Antagonists|

* (R,R)-THC
* 7β-Hydroxy-DHEA
* Chloroindazole
* Cytestrol acetate
* EM-800
* Epitiostanol
* ERA-90
* ERB-88
* Fulvestrant (ICI-182780)
* Glyceollins (I, II, III, IV)
* ICI-164384
* Mepitiostane
* Methylepitiostanol
* Methylpiperidinopyrazole
* MIBE
* Oxabicycloheptene sulfonate
* Phenytoin
* PHTPP
* Prochloraz
* RU-58668
* SS1020
* TAS-108 (SR-16234)
* ZB716
* ZK-164015
* ZK-191703

* Coregulator-binding modulators: ERX-11

GPER|

| Agonists|

* 2-Methoxyestradiol
* 7β-Hydroxyepiandrosterone
* Afimoxifene (4-hydroxytamoxifen)
* Atrazine
* Bisphenol A
* Daidzein
* DDT (p,p'-DDT, o',p'-DDE)
* Equol
* Estradiol
* Ethinylestradiol
* Fulvestrant (ICI-182780)
* G-1
* Genistein
* GPER-L1
* GPER-L2
* Hydroxytyrosol
* Kepone
* Niacin
* Nicotinamide
* Nonylphenol
* Oleuropein
* PCBs (2,2',5'-PCB-4-OH)
* Propylpyrazoletriol
* Quercetin
* Raloxifene
* Resveratrol
* Tamoxifen
* Tectoridin
* Zearalanone
* Zearalenol
* Zearalenone
* Zeranol (zearalanol))

|

Antagonists|

* CCL18
* Estriol
* G-15
* G-36
* MIBE

See also
Receptor/signaling modulators
Estrogens and antiestrogens
Androgen receptor modulators
Progesterone receptor modulators
List of estrogens

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*[v]: View this template
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*[ER]: Estrogen receptor
*[GnRH]: gonadotropin-releasing hormone
*[FSH]: follicle-stimulating hormone
*[LH]: luteinizing hormone
*[SERMs]: Selective estrogen receptor modulators
*[SERDs]: selective estrogen receptor downregulators
*[GPER]: G protein-coupled estrogen receptor