Ethisterone
Also known as: 17α-Ethynyltestosterone, 17α-Ethinyltestosterone, Anhydrohydroxyprogesterone, Ethinyltestosterone, Pregneninolone, Gestoral, Pranone, Progestoral, 17β-Hydroxy-17α-ethynyl-4-androsten-3-one, 17-Ethynyl-17β-hydroxyandrost-4-en-3-one, (8R,9S,10R,13S,14S,17R)-17-ethynyl-17-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
Ethisterone (CAS 434-03-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H28O2 and a molecular weight of 312.446 g/mol. Key properties include a melting point of 266-273ºC, a boiling point of 446.4±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 190.2±21.3 °C. It is classified under GHS with signal word Danger and hazard statements H360 — May damage fertility or the unborn child. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 434-03-7
- Jingsj CID
- J-1317929-2
- Molecular Formula
- C21H28O2
- Molecular Weight
- 312.446 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 266-273ºC |
|---|---|
| Boiling Point | 446.4±45.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 190.2±21.3 °C |
| Exact Mass | 312.208923 |
| PSA | 37.30000 |
| LogP | 3.86 |
| Vapor Pressure | 0.0±2.5 mmHg at 25°C |
| Refractive Index | 1.572 |
| Storage Conditions | 2~8°C |
GHS Safety & Compliance
- H360 — May damage fertility or the unborn child
Customs & Trade Information
| HS Code | 2942000000 |
|---|
Frequently Asked Questions
What is the CAS number of Ethisterone?
The CAS number of Ethisterone is 434-03-7.
What are the molecular formula and molecular weight of Ethisterone?
Ethisterone has molecular formula C21H28O2 and molecular weight 312.446 g/mol.
Is Ethisterone hazardous?
Ethisterone has GHS signal word Danger and hazard statements H360 — May damage fertility or the unborn child.
What are the upstream and downstream products of Ethisterone?
For Ethisterone, Upstream Products: Androstenedione, Acetylene; Downstream Products: Canrenone, 16-Dehydroprogesterone, 17β-Hydroxyprogesterone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethisterone (CAS 434-03-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1317929-2 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.