5α-Dihydroprogesterone

二氢黄体酮

Also known as: 5-alpha-dihydroprogesterone, 5α-pregnane-3,20-dione, 5a-pregnane-3,20-dione, allopregnane-3,20-dione, allopregnanedione, 3,20-dioxo-5α-pregnane, (5α)-pregnane-3,20-dione, pregnane-3,20-dione, 5-α-pregnane-3,20-dione

5α-Dihydroprogesterone (CAS 566-65-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H32O2 and a molecular weight of 316.478 g/mol. It is also known as 5-alpha-dihydroprogesterone, 5α-pregnane-3,20-dione and 5a-pregnane-3,20-dione. Key properties include a melting point of 204 °C, a boiling point of 429.2±38.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 160.3±23.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 566-65-4
Jingsj CID: J-1987420-1
Molecular Formula: C₂₁H₃₂O₂
Chinese Name: 二氢黄体酮
Molecular Weight: 316.478 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	204 °C
Boiling Point	429.2±38.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	160.3±23.8 °C

Frequently Asked Questions

What is the CAS number of 5α-Dihydroprogesterone?

The CAS number of 5α-Dihydroprogesterone is 566-65-4.

What are the molecular formula and molecular weight of 5α-Dihydroprogesterone?

5α-Dihydroprogesterone has molecular formula C21H32O2 and molecular weight 316.478 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. "5α-Dihydroprogesterone (CAS 566-65-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987420-1 (accessed 2026-10-22).

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