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CAS 2052-15-5 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 3914702/03/2011

BUTYL LAEVULINATE

n-Butyl 4-oxopentanoate

BUTYL LAEVULINATE 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 2052-15-5

CAS 2052-15-5PubChem CID 16331

Butyl levulinate

Butyl levulinate is an oxo carboxylic acid. — ChEBI

IUPAC name: butyl 4-oxopentanoate

Molecular formula: C9H16O3
Molecular weight: 172.22 g/mol
Exact mass: 172.109944368 Da
XLogP3: 1.0
Topological polar surface area: 43.4 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

n-Butyl levulinatePentanoic acid, 4-oxo-, butyl esterButyl laevulinaten-Butyl laevulinateLEVULINIC ACID, BUTYL ESTERButyl 4-ketovalerateButyl acetylpropionate4-Ketopentanoic acid butyl ester

16 more reported names

FEMA No. 2207NSC 78451EINECS 218-143-4UNII-OI56208RTBLevulinic acid n-butyl esterBRN 1768453AI3-00518NSC-78451BUTYL LEVULINATE [FHFI]EC 218-143-44-03-00-01563 (Beilstein Handbook Reference)RefChem:122269218-143-4ISBWNEKJSSLXOD-UHFFFAOYSA-Nn-Butyl 4-oxopentanoate4-oxo-pentanoic acid butyl ester

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:171935
ChEMBL:CHEMBL3188634
EPA DTXSID:DTXSID3038800
PubMed:22105964
PubMed:21226220

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 BUTYL LAEVULINATE

INCI name

BUTYL LAEVULINATE

Description

n-Butyl 4-oxopentanoate

Record provenance

Inventory reference: 39147
Imported identity: BUTYL LAEVULINATE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for BUTYL LAEVULINATE

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Key data

CAS

2052-15-5

218-143-4

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Records sharing a CAS or EC identity

BUTYL LEVULINATE

Ingredients with overlapping formulation functions

BUTYL HEXANOATEPERFUMING

BUTYL ISOBUTYRATEPERFUMING

BUTYL ISOHEXANOATEPERFUMING

BUTYL ISOVALERATEPERFUMING

BUTYL OCTANOATEPERFUMING

BUTYL PHENETHYL ETHERPERFUMING

BUTYL PHENYLACETATEPERFUMING

BUTYL PROPIONATEPERFUMING

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 BUTYL LAEVULINATE appears in the CosIng inventory

The CosIng inventory lists BUTYL LAEVULINATE 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.

BUTYL LAEVULINATE 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

BUTYL LAEVULINATE 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, BUTYL LAEVULINATE carries the following function designation(s):

PERFUMING

CAS 2052-15-5 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 BUTYL LAEVULINATE

This page reproduces the CosIng inventory entry for BUTYL LAEVULINATE 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 BUTYL LAEVULINATE 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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