4-Pregnene-17α,20β,21-triol-3-one

4-孕烯-17α,20β,21-三醇-3-酮

Also known as: 20β-Dihydrocortexone, 17α,20β,21-Trihydroxypregn-4-en-3-one, 4-Pregnene-17α,20β,21-triol-3-one, Pregn-4-ene-17α,20β,21-triol-3-one

4-Pregnene-17α,20β,21-triol-3-one (CAS 128-19-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C21H32O4 and a molecular weight of 348.47600 g/mol. It is also known as 20β-Dihydrocortexone, 17α,20β,21-Trihydroxypregn-4-en-3-one and Pregn-4-ene-17α,20β,21-triol-3-one. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 128-19-8
Jingsj CID: J-25975-8
Molecular Formula: C₂₁H₃₂O₄
Chinese Name: 4-孕烯-17α,20β,21-三醇-3-酮
Molecular Weight: 348.47600 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 4-Pregnene-17α,20β,21-triol-3-one?

The CAS number of 4-Pregnene-17α,20β,21-triol-3-one is 128-19-8.

What are the molecular formula and molecular weight of 4-Pregnene-17α,20β,21-triol-3-one?

4-Pregnene-17α,20β,21-triol-3-one has molecular formula C21H32O4 and molecular weight 348.47600 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-17α,20β,21-triol-3-one (CAS 128-19-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25975-8 (accessed 2026-10-23).

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