Official EU label nameGlossary entry 9916

ERGOSTEROL ENDOPEROXIDE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Resolved identifiers

Resolved substance identity

CAS:2061-64-5

Ingredient index records:

ERGOSTEROL ENDOPEROXIDE

Cosmetic functions: BLEACHING, HUMECTANT, SKIN CONDITIONING

Ergosterol-5,8-peroxide

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1 matched or reported name

ERGOSTEROL ENDOPEROXIDE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ERGOSTEROL ENDOPEROXIDE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 2061-64-5

CAS 2061-64-5PubChem CID 5351516

Ergosterol Peroxide

Ergosterol peroxide is an ergostanoid that is ergosta-6,22-dien-3-ol with a peroxy group between positions 5 and 8 (the 3beta,5alpha,8alpha,22E stereoisomer). Isolated from Ganoderma lucidum and Cordyceps sinensis, it exhibits antimycobacterial, trypanocidal and antineoplastic activities. It has a role as a metabolite, an antineoplastic agent, a trypanocidal drug and an antimycobacterial drug. It is an organic peroxide, a member of phytosterols, a 3beta-sterol and an ergostanoid. It is functionally related to an ergosterol. — ChEBI

IUPAC name: (1S,2R,5R,6R,9R,10R,13S,15S)-5-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-6,10-dimethyl-16,17-dioxapentacyclo[13.2.2.01,9.02,6.010,15]nonadec-18-en-13-ol

Molecular formula: C28H44O3
Molecular weight: 428.6 g/mol
Exact mass: 428.32904526 Da
XLogP3: 6.7
Topological polar surface area: 38.7 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 10

Also known as

Ergosterol endoperoxidePeroxyergosterolErgosterol-5,8-peroxideErgosterol 5alpha,8alpha-epidioxideUG9TN81TGHNSC-31324CHEBI:65858(22E,24R)-5alpha,8alpha-epidioxyergosta-6,22-dien-3beta-ol

16 more reported names

3-hydroxy-5,7-epidioxyergosta-6,22-diene5alpha,8alpha-Ergosta-6,22-dien-3beta-ol, 5,8-epidioxy-Ergosta-6,22-dien-3-ol, 5,8-epidioxy-, (3beta,5alpha,8alpha,22E)-(1S,2R,5R,6R,9R,10R,13S,15S)-5-((E,2R,5R)-5,6-dimethylhept-3-en-2-yl)-6,10-dimethyl-16,17-dioxapentacyclo(13.2.2.01,9.02,6.010,15)nonadec-18-en-13-ol5,8-epidioxyergosta-6,22-dien-3-olRefChem:9211085alpha,8alpha-epidioxy-22E-ergosta-6,22-dien-3beta-ol(24R)-5alpha,8alpha-epidioxy-24-methylcholesta-6,22-dien-3beta-olNSC 31324(1S,2R,5R,6R,9R,10R,13S,15S)-5-[(2R,3E,5R)-5,6-dimethylhept-3-en-2-yl]-6,10-dimethyl-16,17-dioxapentacyclo[13.2.2.0^{1,9}.0^{2,6}.0^{10,15}]nonadec-18-en-13-olUNII-UG9TN81TGH(3beta,5alpha,8alpha,22E)-5,8-epidioxyergosta-6,22-dien-3-ol5.alpha.,8.alpha.-Ergosta-6,22-dien-3.beta.-ol, 5,8-epidioxy-Ergosta-6,22-dien-3-ol, 5,8-epidioxy-, (3.beta.,5.alpha.,8.alpha.,22E)-Ergosterol 5.alpha.,8.alpha.-epidioxideErgosterol 5-alpha,8-alpha-epidioxide

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External database identifiers

ChEBI:CHEBI:65858
ChEMBL:CHEMBL434750
EPA DTXSID:DTXSID501021533
PubMed:20100469
PubMed:20085279
PubMed:19475991
PubMed:16595913

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

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Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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