4-Pregnene-3,11,20-trione

4-孕烯-3,11,20-三酮

Also known as: 11-Ketoprogesterone, 11-oxoprogesterone, ketogestin, ketoprogesterone, 11-KETOPROGESTERONE, 4-PREGNEN-3,11,20-TRIONE, PREGN-4-ENE-3,11,20-TRIONE, u1258

4-Pregnene-3,11,20-trione (CAS 516-15-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H28O3 and a molecular weight of 328.44500 g/mol. It is also known as 11-Ketoprogesterone, 11-oxoprogesterone and ketogestin. Key properties include a melting point of 170-175 °C(lit.), a boiling point of 487.6ºC at 760 mmHg, a density of 1.14 g/cm3 and a flash point of 209.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 516-15-4
Jingsj CID: J-28241-7
Molecular Formula: C₂₁H₂₈O₃
Chinese Name: 4-孕烯-3,11,20-三酮
Molecular Weight: 328.44500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	170-175 °C(lit.)
Boiling Point	487.6ºC at 760 mmHg
Density	1.14 g/cm3
Flash Point	209.3ºC

Frequently Asked Questions

What is the CAS number of 4-Pregnene-3,11,20-trione?

The CAS number of 4-Pregnene-3,11,20-trione is 516-15-4.

What are the molecular formula and molecular weight of 4-Pregnene-3,11,20-trione?

4-Pregnene-3,11,20-trione has molecular formula C21H28O3 and molecular weight 328.44500 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. "4-Pregnene-3,11,20-trione (CAS 516-15-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28241-7 (accessed 2026-10-22).

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