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CAS 542-28-9 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 9593024/04/2018

DELTA-VALEROLACTONE

2H-Pyran-2-one, tetrahydro-

DELTA-VALEROLACTONE 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 542-28-9

CAS 542-28-9PubChem CID 10953

Delta-Valerolactone

5-valerolactone is the simplest member of the class of delta-lactone that is tetrahydro-2H-pyran substituted by an oxo group at position 2. It derives from a hydride of an oxane. — ChEBI

IUPAC name: oxan-2-one

Molecular formula: C5H8O2
Molecular weight: 100.12 g/mol
Exact mass: 100.052429494 Da
XLogP3: -0.3
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

TETRAHYDRO-2H-PYRAN-2-ONE5-Valerolactone2H-Pyran-2-one, tetrahydro-NSC-624714V1X9149LCHEBI:16545RefChem:585696208-807-1

16 more reported names

tetrahydropyran-2-oneTetrahydro-2-pyranonedelta-Valeryllactone.delta.-ValerolactoneValerolactone1-Oxacyclohexan-2-one.delta.-Valeryllactonetetrahydro-pyran-2-oneNSC 6247Penta-1,5-lactone3H-4,5,6-trihydropyran-2-one5-pentanolided-valerolactoneCyclopentanolideUNII-14V1X9149LN -Valerolactone

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:16545
ChEMBL:CHEMBL452383
EPA DTXSID:DTXSID6044438
PubMed:22827565
PubMed:22530604
PubMed:22349589
PubMed:22254058
PubMed:22125678
PubMed:21943300
PubMed:21755999
PubMed:21744450
PubMed:21583062
PubMed:21582604
PubMed:21579451
PubMed:21540794

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 DELTA-VALEROLACTONE

INCI name

DELTA-VALEROLACTONE

Description

2H-Pyran-2-one, tetrahydro-

Record provenance

Inventory reference: 95930
Imported identity: DELTA-VALEROLACTONE
Source update: 24/04/2018

European Commission CosIng source notes

Annex records for DELTA-VALEROLACTONE

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Key data

CAS

542-28-9

208-807-1

Restriction

—

Function

NOT REPORTED: No function currently reported.

Ingredients with overlapping formulation functions

DALOSIRVATNOT REPORTED

DATURA STRAMONIUM POWDERNOT REPORTED

DECAPEPTIDE-47NOT REPORTED

DECYL POLYSTYRENE OXIDE/PEG-23 COPOLYMER PHOSPHATENOT REPORTED

DELTAMETHRINNOT REPORTED

DIALLYLDIMETHYL AMMONIUM CHLORIDENOT REPORTED

DIETHYL CARBONATENOT REPORTED

DIETHYLENETRIAMINENOT REPORTED

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 DELTA-VALEROLACTONE appears in the CosIng inventory

The CosIng inventory lists DELTA-VALEROLACTONE 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.

DELTA-VALEROLACTONE 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

DELTA-VALEROLACTONE 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, DELTA-VALEROLACTONE carries the following function designation(s):

NOT REPORTED

CAS 542-28-9 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 DELTA-VALEROLACTONE

This page reproduces the CosIng inventory entry for DELTA-VALEROLACTONE 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 DELTA-VALEROLACTONE 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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