Ergosterol

Also known as: Provitamin D2, 3β-Hydroxy-5,7,22-ergostatriene, 5,7,22-Ergostatrien-3β-ol, (22E,24R)-Ergosta-5,7,22-trien-3β-ol, (3β,22E)-Ergosta-5,7,22-trien-3-ol, Ergosterin, Provitamine D2, (22E)-Ergosta-5,7,22-trien-3β-ol

Ergosterol (CAS 57-87-4) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C28H44O and a molecular weight of 396.648 g/mol. Key properties include a melting point of 156-158 °C(lit.), a boiling point of 501.5±39.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 216.3±19.3 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 57-87-4
Jingsj CID: J-35941-1
Molecular Formula: C₂₈H₄₄O
Molecular Weight: 396.648 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	156-158 °C(lit.)
Boiling Point	501.5±39.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	216.3±19.3 °C
Exact Mass	396.339203
PSA	20.23000
LogP	9.30
Vapor Pressure	0.0±2.9 mmHg at 25°C
Refractive Index	1.543
Additional Property	PRACTICALLY INSOLUBLE

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger

H302 — Harmful if swallowed
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H331 — Toxic if inhaled
H336 — May cause drowsiness or dizziness
H351 — Suspected of causing cancer
H372 — Causes damage to organs through prolonged exposure

Activity & Biological Data

Target	Human Endogenous Metabolite
Additional Information	[1]. Kawai J, et al. Ergosterol and its derivatives from Grifola frondosa inhibit antigen-induced degranulation of RBL-2H3 cells by suppressing the aggregation of high affinity IgE receptors. Biosci Biotechnol Biochem. 2018 Jul 2:1-9. [2]. Xu J, et al. Ergosterol Attenuates LPS-Induced Myocardial Injury by Modulating Oxidative Stress and Apoptosis in Rats. Cell Physiol Biochem. 2018;48(2):583-592.

Target

Human Endogenous Metabolite

Additional Information

[1]. Kawai J, et al. Ergosterol and its derivatives from Grifola frondosa inhibit antigen-induced degranulation of RBL-2H3 cells by suppressing the aggregation of high affinity IgE receptors. Biosci Biotechnol Biochem. 2018 Jul 2:1-9. [2]. Xu J, et al. Ergosterol Attenuates LPS-Induced Myocardial Injury by Modulating Oxidative Stress and Apoptosis in Rats. Cell Physiol Biochem. 2018;48(2):583-592.

Frequently Asked Questions

What is the CAS number of Ergosterol?

The CAS number of Ergosterol is 57-87-4.

What are the molecular formula and molecular weight of Ergosterol?

Ergosterol has molecular formula C28H44O and molecular weight 396.648 g/mol.

Is Ergosterol hazardous?

Ergosterol has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Ergosterol?

For Ergosterol, Downstream Products: Brassicasterol, Stellasterol, Ergocalciferol.

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. "Ergosterol (CAS 57-87-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35941-1 (accessed 2026-11-09).

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