3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane

Also known as: Allopregnane-3α,17α,20β-triol, (20R)-5α-pregnane-3α,17,20-triol, 5α-Pregnane-3α,17α,20β-triol, (3α,5α,20R)-Pregnane-3,17,20-triol, EINECS 237-708-6, Pregnane-3,17,20-triol, (3α,5α,20R)-, 5α-Pregnan-3α,17α,20β-triol

3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane (CAS 13933-75-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C21H36O3 and a molecular weight of 336.50900 g/mol. Key properties include a boiling point of 475ºC at 760mmHg, a density of 1.115g/cm3 and a flash point of 211ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 13933-75-0
Jingsj CID: J-1384296-1
Molecular Formula: C₂₁H₃₆O₃
Molecular Weight: 336.50900 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	475ºC at 760mmHg
Density	1.115g/cm3
Flash Point	211ºC
Exact Mass	336.26600
PSA	60.69000
LogP	3.50190
Vapor Pressure	5.1E-11mmHg at 25°C
Refractive Index	1.547

Frequently Asked Questions

What is the CAS number of 3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane?

The CAS number of 3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane is 13933-75-0.

What are the molecular formula and molecular weight of 3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane?

3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane has molecular formula C21H36O3 and molecular weight 336.50900 g/mol.

What are the upstream and downstream products of 3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane?

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

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. "3-alpha,17-alpha,20-beta-trihydroxy-5-alpha-pregnane (CAS 13933-75-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1384296-1 (accessed 2026-11-09).

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