5α-Pregnan-3α,17-diol-20-one

Also known as: 3α,17-Dihydroxy-5α-pregnan-20-one, 17-Hydroxyallopregnanolone, (3α,5α)-3,17-Dihydroxypregnan-20-one, 5α-Pregnan-3α,17α-diol-20-one, Allopregnan-3α,17α-diol-20-one, 5α-Pregnan-20-one, 3α,17-dihydroxy-

5α-Pregnan-3α,17-diol-20-one (CAS 6890-65-9) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C21H34O3 and a molecular weight of 334.49300 g/mol. Key properties include a boiling point of 465.4ºC at 760 mmHg, a density of 1.123g/cm3 and a flash point of 249.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6890-65-9
Jingsj CID: J-1384310-2
Molecular Formula: C₂₁H₃₄O₃
Molecular Weight: 334.49300 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	465.4ºC at 760 mmHg
Density	1.123g/cm3
Flash Point	249.4ºC
Exact Mass	334.25100
PSA	57.53000
LogP	3.71010
Refractive Index	1.544

Frequently Asked Questions

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

The CAS number of 5α-Pregnan-3α,17-diol-20-one is 6890-65-9.

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

5α-Pregnan-3α,17-diol-20-one has molecular formula C21H34O3 and molecular weight 334.49300 g/mol.

What are the upstream and downstream products of 5α-Pregnan-3α,17-diol-20-one?

For 5α-Pregnan-3α,17-diol-20-one, Downstream Products: 3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5α-Pregnan-3α,17-diol-20-one (CAS 6890-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1384310-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.