CAS 57-63-6: Ethinylestradiol

Description:Ethinylestradiol is a synthetic estrogen, primarily used in hormonal contraceptives and hormone replacement therapy. It is characterized by its potent estrogenic activity, which is significantly stronger than that of natural estradiol. Ethinylestradiol is a white to off-white crystalline powder that is poorly soluble in water but soluble in organic solvents such as ethanol and acetone. Its chemical formula is C20H24O2, and it has a molecular weight of approximately 296.4 g/mol. The compound features an ethynyl group at the C17 position, which enhances its oral bioavailability and metabolic stability compared to natural estrogens. Ethinylestradiol acts by binding to estrogen receptors, influencing various physiological processes, including the regulation of the menstrual cycle and the development of secondary sexual characteristics. Due to its estrogenic effects, it can also have side effects, including an increased risk of thromboembolic events. As a widely used pharmaceutical agent, it is essential to consider its pharmacokinetics, potential interactions, and contraindications in clinical applications.

Formula:C₂₀H₂₄O₂

InChI:InChI=1S/C20H24O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,5,7,12,16-18,21-22H,4,6,8-11H2,2H3/t16-,17-,18+,19+,20+/m1/s1

InChI key:InChIKey=BFPYWIDHMRZLRN-SLHNCBLASA-N

SMILES:C#CC1(O)CCC2C3CCC4=CC(O)=CC=C4C3CCC21C

Synonyms:
(17Alpha)-17-Ethynylestra-1,3,5(10)-Triene-3,17-Diol
(17Beta)-17-Ethynylestra-1,3,5(10)-Triene-3,17-Diol
(17α)-19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol
(8Alpha,13Alpha,17Beta)-17-Ethynylestra-1,3,5(10)-Triene-3,17-Diol
(8Xi,9Xi,14Xi,17Beta)-17-Ethynylestra-1,3,5(10)-Triene-3,17-Diol
17-Ethinyl-3,17-estradiol
17-Ethinylestradiol
17-Ethynyl Estradiol
17-Ethynyl-3,17-dihydroxy-1,3,5-oestratriene
17-Ethynylestra-1,3,5(10)-Triene-3,17-Diol
See more synonyms
17-Ethynylestra-1,3,5(10)-triene-3,17β-diol
17-Ethynylestradiol
17-Nor-17α-pregna-1,3,5-(10)-trien-20-yne-3,17-diol
17A-Ethynyl-1,3,5(10)-Estratriene-3,17B-Diol
17Alpha-Ethynyl-3,17-Dihydroxy-Delta-(Sup1,3,5)-Estratriene
17alpha-Ethynyl-3-hydroxy-1,3,5(10)-estratrien-17beta-ol
17α-Ethinyl estradiol (EE2)
17α-Ethinyl-1,3,5(10)-estratriene-3,17-diol
17α-Ethinyl-17β-estradiol
17α-Ethinyl-3,17-dihydroxy-Δ1,3,5-estratriene
17α-Ethinyl-3,17-dihydroxy-Δ<sup>1,3,5</sup>-estratriene
17α-Ethinylestra-1,3,5(10)-triene-3,17β-diol
17α-Ethinylestradiol
17α-Ethynylestra-1,3,5(10)-triene-3,17β-diol
17α-Ethynylestra-3,17β-diol
17α-Ethynylestradiol
19-Nor-17Alpha-Pregna-1,3,5(10)-Trien-20-Yne-3,17,Diol
19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol
19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17β-diol
19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, (17alpha)-
19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, (17α)-
3,17Beta-Dihydroxy-17Alpha-Ethynyl-1,3,5(10)-Estratriene
Acetylene estradiol
Amenoron
Anovlar
Chee-O-Gen
Chee-O-Genf
Diognat-E
Diogyn-E
Dyloform
EE
Esteed
Estigyn
Estinyl
Eston-E
Estone
Estoral
Estoral (Orion)
Estorals
Estra-1,3,5(10)-Triene-3,17Beta-Diol, 17Alpha-Ethynyl-
Estradiol, 17-ethynyl-
Estroals
Ethidol
Ethinoral
Ethinyl estradiol
Ethinyloestradiol
Ethynyl estradiol
Ethynylestradiol
Ethynyloestradiol
Eticyclin
Eticyclol
Etinestrol
Etinestryl
Etinilestradiol
Etinoestryl
Etistradiol
Feminone
Follicoral
Ginestrene
Gynofen
Inestra
Linoral
Lynoral
Menolyn
Microfollin
Neo-Estrone
Novestrol
Novinet
Nsc 10973
Oradiol
Orestralyn
Palonyl
Perovex
Primogyn
Primogyn C
Primogyn C(Or M)
Primogyn M
Progynon C
Prosexol
Roldiol
Spanestrin
Ylestrol

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Product data	Purity	Price range	Estimated delivery
Ethynylestradiol REF: 3B-E0037CAS: 57-63-6	>98.0%(T)(HPLC)	66.00 €~179.00 €	Thu 24 Apr 25
Ethinylestradiol RS REF: 41-ICRS0305CAS: 57-63-6	- - -	102.00 €	Tue 29 Apr 25
Ethinylestradiol CRS REF: 41-E1900000CAS: 57-63-6	- - -	115.00 €	Tue 29 Apr 25
Ethinylestradiol for system suitability CRS REF: 41-Y0001124CAS: 57-63-6	- - -	115.00 €	Tue 29 Apr 25
Ethinylestradiol REF: 47-421CAS: 57-63-6	97.0%	242.00 €	Tue 29 Apr 25
Ethinyl Estradiol REF: 45-1260001CAS: 57-63-6	- - -	463.00 €	Wed 30 Apr 25
Ethynyl estradiol REF: TM-T1424CAS: 57-63-6	99.46% - 99.75%	38.00 €~58.00 €	Fri 02 May 25
Ethynyl estradiol REF: 54-OR1030255CAS: 57-63-6	- - -	32.00 €~3,302.00 €	Fri 02 May 25
Ethynyl estradiol REF: 54-BUP16737CAS: 57-63-6	≥98%	56.00 €~90.00 €	Fri 02 May 25
Ethinylestradiol REF: 7W-GP3324CAS: 57-63-6	≥ 98.0%	79.00 €~175.00 €	Fri 02 May 25
Ethinyl Estradiol REF: 4Z-E-099CAS: 57-63-6	- - -	To inquire	Fri 02 May 25
17a-Ethinylestradiol REF: 04-C13245100CAS: 57-63-6	- - -	67.00 €	Tue 06 May 25
Ethinylestradiol REF: 86-MM0123.00-0250CAS: 57-63-6	- - -	832.00 €	Tue 06 May 25
Ethinylestradiol, 98% REF: AC-46155CAS: 57-63-6	98%	117.00 €~290.00 €	Tue 06 May 25
17a-Ethinylestradiol 100 µg/mL in Acetonitrile REF: 04-XA13245100ALCAS: 57-63-6	- - -	30.00 €	Tue 06 May 25
GB 31660.2-2019 Antibiotics Mixture 168 30-100 µg/mL in Methanol REF: 04-A50000168MECAS: 140-66-9 25154-52-3 50-27-1 50-28-2 53-16-7 56-53-1 57-63-6 80-05-7	- - -	435.00 €	Tue 06 May 25
Ethinylestradiol-d7 REF: 4Z-E-4611CAS: 57-63-6	- - -	To inquire	Thu 08 May 25
Ethinylestradiol-13C2 REF: 4Z-E-4610CAS: 57-63-6	- - -	To inquire	Thu 08 May 25
Ethinylestradiol RS REF: 2K-1023000021CAS: 57-63-6	- - -	To inquire	Fri 09 May 25
Ethynyl Estradiol REF: TR-E685100CAS: 57-63-6	- - -	106.00 €~206.00 €	Tue 13 May 25