(20R)-5α-pregnane-3β,17,20-triol

5α-孕烷-3β,17,20β-三醇

Also known as: 5α-Pregnan-3β,17,20β-triol, Allopregnane-3β,17α,20β-triol, Reichstein's Substance J, 5alpha-pregnane-3beta,17,20beta-triol, 5ALPHA-PREGNAN-3BETA,17ALPHA,20BETA-TRIOL, ALLOPREGNAN-3BETA,17ALPHA,20BETA-TRIOL, 5-ALPHA-PREGNAN-3-BETA, 17,20-BETA-TRIOL

(20R)-5α-pregnane-3β,17,20-triol (CAS 520-86-5) 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. It is also known as 5α-Pregnan-3β,17,20β-triol, Allopregnane-3β,17α,20β-triol and Reichstein's Substance J. Key properties include a boiling point of 469.9ºC at 760mmHg, a density of 1.123g/cm3 and a flash point of 208.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 520-86-5
Jingsj CID: J-849156-3
Molecular Formula: C₂₁H₃₆O₃
Chinese Name: 5α-孕烷-3β,17,20β-三醇
Molecular Weight: 336.50900 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	469.9ºC at 760mmHg
Density	1.123g/cm3
Flash Point	208.2ºC

Frequently Asked Questions

What is the CAS number of (20R)-5α-pregnane-3β,17,20-triol?

The CAS number of (20R)-5α-pregnane-3β,17,20-triol is 520-86-5.

What are the molecular formula and molecular weight of (20R)-5α-pregnane-3β,17,20-triol?

(20R)-5α-pregnane-3β,17,20-triol has molecular formula C21H36O3 and molecular weight 336.50900 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. "(20R)-5α-pregnane-3β,17,20-triol (CAS 520-86-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-849156-3 (accessed 2026-10-24).

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