Ethinyl estradiol
Also known as: Ethynyl estradiol, 17α-Ethynylestradiol, 17α-Ethynyl-1,3,5(10)-estratriene-3,17β-diol, 19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, EE2, Estinyl, Estoral, Etivex, Gynolett, Kolpolyn, Progylut, Progynon M, Prosexol, Ylestrol, Anovlar, Dufaston
Ethinyl estradiol (CAS 57-63-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C20H24O2 and a molecular weight of 296.403 g/mol. Key properties include a melting point of 182-183 °C(lit.), a boiling point of 457.2±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 211.2±23.3 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H350 — May cause cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 57-63-6
- Jingsj CID
- J-47478-0
- Molecular Formula
- C20H24O2
- Molecular Weight
- 296.403 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 182-183 °C(lit.) |
|---|---|
| Boiling Point | 457.2±45.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 211.2±23.3 °C |
| Exact Mass | 296.177643 |
| PSA | 40.46000 |
| LogP | 4.52 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.624 |
| Additional Property | ethanol: 50 mg/mL, clear, slightly yellow |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H350 — May cause cancer
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Djerassi C. Chemical birth of the pill. 1992. Am J Obstet Gynecol. 2006 Jan;194(1):290-8. |
Customs & Trade Information
| HS Code | 2937290090 |
|---|
Frequently Asked Questions
What is the CAS number of Ethinyl estradiol?
The CAS number of Ethinyl estradiol is 57-63-6.
What are the molecular formula and molecular weight of Ethinyl estradiol?
Ethinyl estradiol has molecular formula C20H24O2 and molecular weight 296.403 g/mol.
Is Ethinyl estradiol hazardous?
Ethinyl estradiol has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H350 — May cause cancer.
What are the upstream and downstream products of Ethinyl estradiol?
For Ethinyl estradiol, Upstream Products: Norethindrone, Estrone, Acetylene; Downstream Products: 2-Hydroxyethynylestradiol, Estradiol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethinyl estradiol (CAS 57-63-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47478-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.