What does the restriction note for 4,6-DIMETHYL-PYRAN-2-ONE mean?

The restriction field for 4,6-DIMETHYL-PYRAN-2-ONE reads: II/1389. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 675-09-2?

CAS 675-09-2 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.

How do I check if my formula contains 4,6-DIMETHYL-PYRAN-2-ONE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3924430/07/2020

4,6-DIMETHYL-PYRAN-2-ONE

4,6-Dimethyl-2H-pyran-2-one

4,6-DIMETHYL-PYRAN-2-ONE is linked to 1 EU annex record on this page. Inventory note: II/1389.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Prohibited entry found Open this evidence	1	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Source mapped Official source mapped; ingredient rule not imported	0	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 675-09-2

CAS 675-09-2PubChem CID 12662

Mesitene lactone

IUPAC name: 4,6-dimethylpyran-2-one

Molecular formula: C7H8O2
Molecular weight: 124.14 g/mol
Exact mass: 124.052429494 Da
XLogP3: 1.1
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

4,6-Dimethyl-2H-pyran-2-one4,6-Dimethyl-2-pyrone4,6-Dimethylcoumalin2H-PYRAN-2-ONE, 4,6-DIMETHYL-4,6-Dimethyl-alpha-pyrone2,4-Dimethyl-alpha-pyrone2,4-Dimethyl-.alpha.-pyrone4,6-Dimethyl-.alpha.-pyrone

16 more reported names

G2MA4KIQ1BEINECS 211-618-7NSC 402790BRN 00024684,6-dimethyl-2-pyranoneNSC-402790Sorbic acid, 5-hydroxy-3-methyl-, .delta.-lactone5-17-09-00409 (Beilstein Handbook Reference)RefChem:811142Sorbic acid, 5-hydroxy-3-methyl-, delta-lactone211-618-7InChI=1/C7H8O2/c1-5-3-6(2)9-7(8)4-5/h3-4H,1-2H4,6-Dimethyl-pyran-2-oneUNII-G2MA4KIQ1B2-Pyrone, 4,6-dimethyl-WLN: T6OVJ D1 F1

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL372284
EPA DTXSID:DTXSID6060973
PubMed:21898887
PubMed:20647461

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 4,6-DIMETHYL-PYRAN-2-ONE

INCI name

4,6-DIMETHYL-PYRAN-2-ONE

Description

4,6-Dimethyl-2H-pyran-2-one

Record provenance

Inventory reference: 39244
Imported identity: 4,6-DIMETHYL-PYRAN-2-ONE
Source update: 30/07/2020

European Commission CosIng source notes

Annex records for 4,6-DIMETHYL-PYRAN-2-ONE

Annex II Restriction reference

Entry 1389

Dichloromethane; methylene chloride

CAS: 75-09-2

EC: 200-838-9

Key data

CAS

675-09-2

211-618-7

Restriction

II/1389

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

3-P-CUMENYL PROPIONALDEHYDEPERFUMING

3-PHENYLBUTYRALDEHYDEPERFUMING

3-TERT-BUTYL-2-METHOXYPYRAZINEPERFUMING

3-TERT-BUTYLCYCLOHEXYL ACETATEPERFUMING

4,7-DIMETHYL-4-VINYLOCT-6-EN-3-OLPERFUMING

4,7-DIMETHYL-6-OCTEN-3-ONEPERFUMING

4,8-DIMETHYL-4,9-DECADIENALPERFUMING

4-BUTYL-5-METHYLTHIAZOLEPERFUMING

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 4,6-DIMETHYL-PYRAN-2-ONE appears in the CosIng inventory

The CosIng inventory lists 4,6-DIMETHYL-PYRAN-2-ONE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

4,6-DIMETHYL-PYRAN-2-ONE 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

4,6-DIMETHYL-PYRAN-2-ONE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for 4,6-DIMETHYL-PYRAN-2-ONE reads: "II/1389". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, 4,6-DIMETHYL-PYRAN-2-ONE carries the following function designation(s):

PERFUMING

CAS 675-09-2 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 4,6-DIMETHYL-PYRAN-2-ONE

This page combines the CosIng inventory entry for 4,6-DIMETHYL-PYRAN-2-ONE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research 4,6-DIMETHYL-PYRAN-2-ONE 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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