5α-Dihydroprogesterone
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. 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-1987420-5
- Molecular Formula
- C21H32O2
- Molecular Weight
- 316.478 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical 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 |
| Exact Mass | 316.240234 |
| PSA | 34.14000 |
| LogP | 4.31 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.516 |
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Wiebe JP, et al. The endogenous progesterone metabolite, 5a-pregnane-3,20-dione, decreases cell-substrate attachment, adhesion plaques, vinculin expression, and polymerized F-actin in MCF-7 breast cancer cells. Endocrine. 2001 Oct;16(1):7-14. |
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.
What are the upstream and downstream products of 5α-Dihydroprogesterone?
For 5α-Dihydroprogesterone, Upstream Products: Progesterone, Allopregnanolone, Pregnenolone; Downstream Products: 3α,21-dihydroxy-5α-pregnan-20-one, Allopregnanolone, Allopregnanolone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5α-Dihydroprogesterone (CAS 566-65-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987420-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.