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CAS 15373-31-6 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 4121102/03/2011

TRIMETHYL-3-CYCLOPENTENYLACETONITRILE

2,2,3-Trimethylcyclopent-3-enylacetonitrile

TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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 15373-31-6

CAS 15373-31-6PubChem CID 85833

3-Cyclopentene-1-acetonitrile, 2,2,3-trimethyl-

(2,2,3-trimethylcyclopent-3-en-1-yl)acetonitrile is a nitrile that is acetonitrile in which one of the hydrogens has been replaced by a 2,2,3-trimethylcyclopent-3-en-1-yl group. A powerful fragrance compound with pine, rosemary and hay-like tonalities. It has a role as a fragrance. It is a volatile organic compound and a nitrile. It derives from a hydride of a cyclopentene. — ChEBI

IUPAC name: 2-(2,2,3-trimethylcyclopent-3-en-1-yl)acetonitrile

Molecular formula: C10H15N
Molecular weight: 149.23 g/mol
Exact mass: 149.120449483 Da
XLogP3: 2.1
Topological polar surface area: 23.8 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

2,2,3-Trimethylcyclopent-3-enylacetonitrileEINECS 239-405-42,2,3-trimethyl-3-cyclopentene-1-acetonitrile3-Cyclopentnen-1-acetonitrile, 2,2,3-trimethyl-NSC 122686RefChem:500839239-405-4Cantryl

9 more reported names

2-(2,2,3-TRIMETHYL-1-CYCLOPENT-3-ENYL)ACETONITRILE3-Cyclopentene-1-acetonitrile,2,2,3-trimethyl-NSC-122686(2,2,3-trimethylcyclopent-3-en-1-yl)acetonitrileDE97J89DCW4-cyanomethyl-5,5-dimethyl-1-methylcyclopent-1-eneCHEBI:142078YYJOTFQPYNOYAB-UHFFFAOYSA-N2-(2,2,3-trimethylcyclopent-3-enyl)ethanenitrile

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:142078
EPA DTXSID:DTXSID60864589

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 TRIMETHYL-3-CYCLOPENTENYLACETONITRILE

INCI name

TRIMETHYL-3-CYCLOPENTENYLACETONITRILE

Description

2,2,3-Trimethylcyclopent-3-enylacetonitrile

Record provenance

Inventory reference: 41211
Imported identity: TRIMETHYL-3-CYCLOPENTENYLACETONITRILE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for TRIMETHYL-3-CYCLOPENTENYLACETONITRILE

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Key data

CAS

15373-31-6

239-405-4

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

TRIMETHYL-2-CYCLOHEXENYL-3-PENTANONE/2-PROPYNOLPERFUMING

TRIMETHYL-2-DECENE-6,8-DIONEPERFUMING

TRIMETHYL-3-CYCLOHEXENE-1-METHANETHIOLPERFUMING

TRIMETHYL-3-CYCLOHEXENYL-3-BUTEN-2-ONEPERFUMING

TRIMETHYL-3-METHYLVINYL-4-VINYLCYCLOHEXYLMETHYL ACETATEPERFUMING

TRIMETHYL-3-NONENOLPERFUMING

TRIMETHYL-3-PHENYLINDANPERFUMING

TRIMETHYL-4,9-DECADIENALPERFUMING

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 TRIMETHYL-3-CYCLOPENTENYLACETONITRILE appears in the CosIng inventory

The CosIng inventory lists TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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.

TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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

TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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, TRIMETHYL-3-CYCLOPENTENYLACETONITRILE carries the following function designation(s):

PERFUMING

CAS 15373-31-6 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 TRIMETHYL-3-CYCLOPENTENYLACETONITRILE

This page reproduces the CosIng inventory entry for TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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 TRIMETHYL-3-CYCLOPENTENYLACETONITRILE 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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