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CAS 55066-49-4 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 7970515/10/2010

PHENYLMETHYLPENTANAL

Pentanal, 3-methyl-5-phenyl-; beta-Methyl-Benzenepentanal

PHENYLMETHYLPENTANAL 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 55066-49-4

CAS 55066-49-4PubChem CID 108313

Phenylmethylpentanal

IUPAC name: 3-methyl-5-phenylpentanal

Molecular formula: C12H16O
Molecular weight: 176.25 g/mol
Exact mass: 176.120115130 Da
XLogP3: 3.0
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

3-Methyl-5-phenyl-1-pentanalMEFRANALBenzenepentanal, .beta.-methyl-Benzenepentanal, beta-methyl-MEFANAL00RZ3F0O1X3-Methyl-5-phenylpentan-1-alEC 433-900-0

13 more reported names

RefChem:861809PHENYLMETHYLPENTANAL [INCI]PHENYLMETHYLPENTANAL, (+-)-433-900-0611-227-5Benzenepentanal, b-methyl-UNII-00RZ3F0O1Xlily pentanalbeta- methylbenzenepentanal3-methyl-5-phenyl-pentanalDFJMIMVMOIFPQG-UHFFFAOYSA-NPHENYLMETHYLPENTANAL, (+/-)-DB-304774

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External database identifiers

EPA DTXSID:DTXSID9052212

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 PHENYLMETHYLPENTANAL

INCI name

PHENYLMETHYLPENTANAL

Description

Pentanal, 3-methyl-5-phenyl-; beta-Methyl-Benzenepentanal

Record provenance

Inventory reference: 79705
Imported identity: PHENYLMETHYLPENTANAL
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for PHENYLMETHYLPENTANAL

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Key data

CAS

55066-49-4

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Restriction

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Function

FRAGRANCE: Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.
PERFUMING: Used for perfume and aromatic raw materials.

Official EU ingredient-name evidence

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

#20745 · PHENYLMETHYLPENTANAL

Ingredients with overlapping formulation functions

PHENYLACETONITRILEFRAGRANCE

PHENYLALANINEFRAGRANCE, HAIR CONDITIONING, SKIN CONDITIONING

PHENYLDIMETHOXYACETOPHENONEFRAGRANCE

PHENYLISOHEXANOLFRAGRANCE

PHENYLPROPANOLFRAGRANCE, PERFUMING, SOLVENT

PHIALOPHORA PARASITICA/AQUILARIA AGALLOCHA WOOD FERMENT POWDERFRAGRANCE

PHOENIX DACTYLIFERA LEAF CELL EXTRACTFRAGRANCE, SKIN PROTECTING

PHYTOLFRAGRANCE, PERFUMING, SKIN CONDITIONING - EMOLLIENT

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 PHENYLMETHYLPENTANAL appears in the CosIng inventory

The CosIng inventory lists PHENYLMETHYLPENTANAL 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.

PHENYLMETHYLPENTANAL is also tagged with 2 cosmetic functions 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

PHENYLMETHYLPENTANAL 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, PHENYLMETHYLPENTANAL carries the following function designation(s):

CAS 55066-49-4 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 PHENYLMETHYLPENTANAL

This page reproduces the CosIng inventory entry for PHENYLMETHYLPENTANAL 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 PHENYLMETHYLPENTANAL 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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