Desmosterol

Also known as: (3β)-Cholesta-5,24-dien-3-ol, 24-Dehydrocholesterol, 24,25-Didehydrocholesterol, Cholesta-5,24-dien-3β-ol, Desmosterol, Cholesterol impurity B

Desmosterol (CAS 313-04-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C27H44O and a molecular weight of 384.638 g/mol. Key properties include a melting point of 121.5ºC, a boiling point of 483.2±14.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 209.2±12.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 313-04-2
Jingsj CID: J-39334-2
Molecular Formula: C₂₇H₄₄O
Molecular Weight: 384.638 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	121.5ºC
Boiling Point	483.2±14.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	209.2±12.4 °C
Exact Mass	384.339203
PSA	20.23000
LogP	9.54
Vapor Pressure	0.0±2.8 mmHg at 25°C
Refractive Index	1.536

Activity & Biological Data

Target	Human Endogenous Metabolite
Additional Information	[1]. Clark RM, et al. Desmosterol in human milk. Lipids. 1983;18(3):264-266.

Frequently Asked Questions

What is the CAS number of Desmosterol?

The CAS number of Desmosterol is 313-04-2.

What are the molecular formula and molecular weight of Desmosterol?

Desmosterol has molecular formula C27H44O and molecular weight 384.638 g/mol.

What are the upstream and downstream products of Desmosterol?

For Desmosterol, Downstream Products: Dihydrocholesterol, 25-Hydroxycholesterol, 24(S),25-Epoxycholesterol.

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. "Desmosterol (CAS 313-04-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39334-2 (accessed 2026-11-06).

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