5β-Pregnan-17α,21-diol-3,20-dione

5β-孕烷-17α,21-二醇-3,20-二酮

Also known as: 5β-Pregnan-17α,21-diol-3,20-dione, 5β-Pregnan-17,21-diol-3,20-dione, Pregnane-3,20-dione, 17,21-dihydroxy-, (5β)-, Pregnane-3,20-dione,17,21-dihydroxy-, (5b)- (9CI), Dihydro-11-desoxycortisol, 5β-Dihydro-11-desoxycortisol, 5β-Dihydro compound S, 5β-Dihydro compound 'S', (5R,8R,9S,10S,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one, (5R,8R,9S,10S,13S,14S,17R)-17-hydroxy-17-(2-hydroxyethanoyl)-10,13-dimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one, (5R,8R,9S,10S,13S,14S,17R)-17-glycoloyl-17-hydroxy-10,13-dimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one

5β-Pregnan-17α,21-diol-3,20-dione (CAS 566-42-7) 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 5β-Pregnan-17,21-diol-3,20-dione, Pregnane-3,20-dione, 17,21-dihydroxy-, (5β)- and Pregnane-3,20-dione,17,21-dihydroxy-, (5b)- (9CI). Key properties include a boiling point of 504ºC at 760mmHg, a density of 1.182g/cm3 and a flash point of 272.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
566-42-7
Jingsj CID
J-1366554-0
Molecular Formula
C21H32O4
Chinese Name
5β-孕烷-17α,21-二醇-3,20-二酮
Molecular Weight
348.47600 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point504ºC at 760mmHg
Density1.182g/cm3
Flash Point272.7ºC

Frequently Asked Questions

What is the CAS number of 5β-Pregnan-17α,21-diol-3,20-dione?

The CAS number of 5β-Pregnan-17α,21-diol-3,20-dione is 566-42-7.

What are the molecular formula and molecular weight of 5β-Pregnan-17α,21-diol-3,20-dione?

5β-Pregnan-17α,21-diol-3,20-dione 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:

How to cite: Jingsj. "5β-Pregnan-17α,21-diol-3,20-dione (CAS 566-42-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1366554-0 (accessed 2026-10-22).

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