Estra-4,9-diene-3,17-dione

甲基双烯双酮

Also known as: 19-Norandrost-4,9-diene-3,17-dione, Methyldienedione, Nordienedione, Trena, Estra-4,9-diene-3,17-dione 99%, Estradienedione, MFCD03695567, 4,9-Androstadiene-3,17-dione, 4,9-Estradien-3,17-dione, 4,9-Estradiene-3,17-dione, 9-Estradien-3, Estra-4,9-diene-3, 19-norandrosta-4,9-diene-3,17-dione

Estra-4,9-diene-3,17-dione (CAS 5173-46-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H22O2 and a molecular weight of 270.366 g/mol. It is also known as 19-Norandrost-4,9-diene-3,17-dione, Methyldienedione and Nordienedione. Key properties include a melting point of 131-134ºC, a boiling point of 466.5±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 173.4±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5173-46-6
Jingsj CID: J-1366948-7
Molecular Formula: C₁₈H₂₂O₂
Chinese Name: 甲基双烯双酮
Molecular Weight: 270.366 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	131-134ºC
Boiling Point	466.5±45.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	173.4±25.7 °C

Frequently Asked Questions

What is the CAS number of Estra-4,9-diene-3,17-dione?

The CAS number of Estra-4,9-diene-3,17-dione is 5173-46-6.

What are the molecular formula and molecular weight of Estra-4,9-diene-3,17-dione?

Estra-4,9-diene-3,17-dione has molecular formula C18H22O2 and molecular weight 270.366 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Estra-4,9-diene-3,17-dione (CAS 5173-46-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1366948-7 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.