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CAS 4884-24-6 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 3923702/03/2011

BICYCLOPENTYLONE

(1,1'-Bicyclopentyl)-2-one

BICYCLOPENTYLONE 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 4884-24-6

CAS 4884-24-6PubChem CID 21003

2-Cyclopentylcyclopentanone

IUPAC name: 2-cyclopentylcyclopentan-1-one

Molecular formula: C10H16O
Molecular weight: 152.23 g/mol
Exact mass: 152.120115130 Da
XLogP3: 2.6
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

[1,1'-Bicyclopentyl]-2-one[Bicyclopentyl]-2-oneITL55F9I8K(1,1'-BICYCLOPENTYL)-2-ONECyclopentanone, 2-cyclopentyl-2-cyclopentyl-cyclopentanone(BICYCLOPENTYL)-2-ONEFEMA NO. 4514

16 more reported names

RefChem:471020225-495-2[1,1'-Bi(cyclopentan)]-2-one2-cyclopentyl cyclopentanone[1,1'-Bicyclopentan]-2-one(1,1'-BICYCLOPENTAN)-2-ONEbicyclopentyl-2-oneUNII-ITL55F9I8K[1,1'-Bicyclopentan]-2-one; [Bicyclopentyl]-2-one (8CI); 2-Cyclopentylcyclopentan-1-one[1,1'-bi(cyclopentane)]-2-oneEINECS 225-495-21,1'-Bi(cyclopentyl)-2-oneCS-W016297EBC-627344BS-17367EN300-1246886

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID70863467
PubMed:22445661
PubMed:18265963
PubMed:15527132
PubMed:15527121

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 BICYCLOPENTYLONE

INCI name

BICYCLOPENTYLONE

Description

(1,1'-Bicyclopentyl)-2-one

Record provenance

Inventory reference: 39237
Imported identity: BICYCLOPENTYLONE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for BICYCLOPENTYLONE

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Key data

CAS

4884-24-6

225-495-2

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

BETULA PENDULA TWIG OILPERFUMING

BETULA PUBESCENS TWIG EXTRACTPERFUMING

BETULA PUBESCENS TWIG OILPERFUMING

BICYCLOHEPTENYLETHANONE OXIMEPERFUMING

BICYCLOPENTYLYL BUTENOATEPERFUMING

BISABOLENEPERFUMING

BLETILLA STRIATA ROOT WATERFLAVOURING, FRAGRANCE, PERFUMING

BOLETUS EDULIS WHOLE PLANT EXTRACTPERFUMING

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 BICYCLOPENTYLONE appears in the CosIng inventory

The CosIng inventory lists BICYCLOPENTYLONE 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.

BICYCLOPENTYLONE 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

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

PERFUMING

CAS 4884-24-6 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 BICYCLOPENTYLONE

This page reproduces the CosIng inventory entry for BICYCLOPENTYLONE 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 BICYCLOPENTYLONE 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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