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CAS 6336-28-3 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 5685315/10/2010

HYDROXYUNDECANOIC ACID

Undecanoic acid, 10-hydroxy-

HYDROXYUNDECANOIC ACID is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 6336-28-3

CAS 6336-28-3PubChem CID 236483

Hydroxyundecanoic acid

(10R)-10-hydroxyundecanoic acid is an (1)-hydroxy fatty acid that is undecanoic acid in which the 10-pro-R hydrogen is replaced by a hydroxy group. It is a medium-chain fatty acid and an (omega-1)-hydroxy fatty acid. — ChEBI

IUPAC name: 10-hydroxyundecanoic acid

Molecular formula: C11H22O3
Molecular weight: 202.29 g/mol
Exact mass: 202.15689456 Da
XLogP3: 3.0
Topological polar surface area: 57.5 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

X2TE94NE7RNSC-39026Undecanoic acid, 10-hydroxy-RefChem:108710310-hydroxy-undecanoic acid(+/-)-Hydroxyundecanoic acidHydroxyundecanoic acid, (+/-)-(10R)-10-hydroxyundecanoic acid

10 more reported names

(+)-10-Hydroxyundecanoic acidUNII-X2TE94NE7R(-)-10-hydroxyundecanoic acid(-)-10-hydroxyhendecanoic acidCHEBI:78956UHZWUNLTEZCDMA-UHFFFAOYSA-N(10R)-10-hydroxyhendecanoic acid(10R)-(-)-10-hydroxyundecanoic acid(10R)-(-)-10-hydroxyhendecanoic acidDB-257313

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:78956
EPA DTXSID:DTXSID701021577

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

Inventory details for HYDROXYUNDECANOIC ACID

INCI name

HYDROXYUNDECANOIC ACID

Description

Undecanoic acid, 10-hydroxy-

Record provenance

Inventory reference: 56853
Imported identity: HYDROXYUNDECANOIC ACID
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for HYDROXYUNDECANOIC ACID

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Key data

CAS

6336-28-3

—

Restriction

—

Function

SKIN CONDITIONING: Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#13427 · HYDROXYUNDECANOIC ACID

Ingredients with overlapping formulation functions

HYDROXYSTEARIC/LINOLENIC/OLEIC POLYGLYCERIDESBINDING, EMULSION STABILISING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

HYDROXYSTEROID OXIDOREDUCTASESKIN CONDITIONING

HYDROXYTRYPTOPHANSKIN CONDITIONING

HYDROXYTYROSOLBLEACHING, SKIN CONDITIONING

HYGROPHILA RINGENS SEEDHUMECTANT, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SKIN PROTECTING

HYLOCEREUS COSTARICENSIS EXOCARP EXTRACTSKIN CONDITIONING

HYLOCEREUS COSTARICENSIS FRUIT EXTRACTSKIN CONDITIONING

HYLOCEREUS COSTARICENSIS FRUIT JUICESKIN CONDITIONING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How HYDROXYUNDECANOIC ACID appears in the CosIng inventory

The CosIng inventory lists HYDROXYUNDECANOIC ACID as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

HYDROXYUNDECANOIC ACID is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

HYDROXYUNDECANOIC ACID is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, HYDROXYUNDECANOIC ACID carries the following function designation(s):

SKIN CONDITIONING

CAS 6336-28-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for HYDROXYUNDECANOIC ACID

This page reproduces the CosIng inventory entry for HYDROXYUNDECANOIC ACID from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research HYDROXYUNDECANOIC ACID and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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