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CAS 175357-18-3 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 5998515/10/2010

UNDECYLENOYL PHENYLALANINE

L-Phenylalanine, N-(1-Oxo-10-Undecenyl)-

UNDECYLENOYL PHENYLALANINE 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.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 175357-18-3

CAS 175357-18-3PubChem CID 10308702

Sepiwhite

The panel concluded that the 115 amino acid alkyl amides listed below are safe in the present practices of use and concentration in cosmetics, when formulated to be non-irritating...Undecylenoyl Phenylalanine... — Cosmetic Ingredient Review (CIR)

IUPAC name: (2S)-3-phenyl-2-(undec-10-enoylamino)propanoic acid

Molecular formula: C20H29NO3
Molecular weight: 331.4 g/mol
Exact mass: 331.21474379 Da
XLogP3: 5.2
Topological polar surface area: 66.4 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 1

Also known as

undecylenoyl phenylalanineSepiwhite mshundecylenoylphenylalanineSepiwhite msh QDN-Undecenoyl-L-phenylalanineL-Phenylalanine, N-(1-oxo-10-undecenyl)-L-Phenylalanine, N-(1-oxo-10-undecen-1-yl)-271P08C6OD

16 more reported names

RefChem:901093(S)-3-Phenyl-2-(undec-10-enamido)propanoic acidUNII-271P08C6ODUndecylenoyl phenylalanine [INCI](2S)-3-phenyl-2-[[(E)-undec-2-enoyl]amino]propanoic AcidUNDECYLENOYL PHENYLALANINE (SEPIWHITE)N-(1-oxo-10-undecen-1-yl)-L-PhenylalanineUndecylenoyl-Phe-OHSepiwhite MSH powderLGB UPundec-10-enoyl-L-phenylalanineRTBWWWVNZWFNBV-SFHVURJKSA-NN-Undec-10-enoyl-L-phenylalanineUndecylenoyl phenylalanine [WHO-DD]BS-51480HY-135014

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID701018253
PubMed:21896130
PubMed:19958429

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 UNDECYLENOYL PHENYLALANINE

INCI name

UNDECYLENOYL PHENYLALANINE

Description

L-Phenylalanine, N-(1-Oxo-10-Undecenyl)-

Record provenance

Inventory reference: 59985
Imported identity: UNDECYLENOYL PHENYLALANINE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for UNDECYLENOYL PHENYLALANINE

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Key data

CAS

175357-18-3

—

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.

#29677 · UNDECYLENOYL PHENYLALANINE

Ingredients with overlapping formulation functions

UNDECYL DIMETHYL OXAZOLINESKIN CONDITIONING

UNDECYLENAMIDOPROPYL BETAINEANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - F…

UNDECYLENOYL HYDROLYZED COLLAGENANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

UNDECYLENOYL INULINEMULSION STABILISING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

UNDECYLENYL ALCOHOLANTISTATIC, FRAGRANCE, PERFUMING, SKIN CONDITIONING

UNDECYLPENTADECANOLSKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

URACILSKIN CONDITIONING

UREAANTISTATIC, BUFFERING, HUMECTANT, SKIN 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 UNDECYLENOYL PHENYLALANINE appears in the CosIng inventory

The CosIng inventory lists UNDECYLENOYL PHENYLALANINE 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.

UNDECYLENOYL PHENYLALANINE 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

UNDECYLENOYL PHENYLALANINE 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, UNDECYLENOYL PHENYLALANINE carries the following function designation(s):

SKIN CONDITIONING

CAS 175357-18-3 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 UNDECYLENOYL PHENYLALANINE

This page reproduces the CosIng inventory entry for UNDECYLENOYL PHENYLALANINE 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 UNDECYLENOYL PHENYLALANINE 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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