18-Methyl-11-methyleneestr-4-ene-3,17-dione
Also known as: 13β-Ethyl-11-methyleneestr-4-ene-3,17-dione, Etonogestrel Related Compound A, Etonogestrel EP Impurity D, 13Beta-Ethyl-11-methylenegon-4-ene-3,17-dione, Gon-4-ene-3,17-dione, 13-ethyl-11-Methylene-, (8S,9S,10R,14S)-13-Ethyl-11-methylene-7,8,9,10,11,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17(2H,6H)-dione, Etonogestrel Impurity 3, Etonogestrel Impurity 17
18-Methyl-11-methyleneestr-4-ene-3,17-dione (CAS 54024-17-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C20H26O2 and a molecular weight of 298.419 g/mol. Key properties include a boiling point of 460.9±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 171.5±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 54024-17-8
- Jingsj CID
- J-866872-7
- Molecular Formula
- C20H26O2
- Molecular Weight
- 298.419 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 460.9±45.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 171.5±25.7 °C |
| Exact Mass | 298.193268 |
| PSA | 34.14000 |
| LogP | 3.28 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.555 |
Frequently Asked Questions
What is the CAS number of 18-Methyl-11-methyleneestr-4-ene-3,17-dione?
The CAS number of 18-Methyl-11-methyleneestr-4-ene-3,17-dione is 54024-17-8.
What are the molecular formula and molecular weight of 18-Methyl-11-methyleneestr-4-ene-3,17-dione?
18-Methyl-11-methyleneestr-4-ene-3,17-dione has molecular formula C20H26O2 and molecular weight 298.419 g/mol.
What are the upstream and downstream products of 18-Methyl-11-methyleneestr-4-ene-3,17-dione?
For 18-Methyl-11-methyleneestr-4-ene-3,17-dione, Upstream Products: (17β)-13-Ethyl-17-hydroxy-11-methylenegon-4-en-3-one, 11a-Hydroxy-18-methylestr-4-ene-3,17-dione; Downstream Products: Desogestrel, 13b-ethyl-11-methylenegon-4-en-17-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "18-Methyl-11-methyleneestr-4-ene-3,17-dione (CAS 54024-17-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-866872-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.