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CAS 24650-42-8 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 5928215/10/2010

PHENYLDIMETHOXYACETOPHENONE

Ethanone, 2,2-dimethoxy-1,2-diphenyl-

PHENYLDIMETHOXYACETOPHENONE 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 24650-42-8

CAS 24650-42-8PubChem CID 90571

2,2-Dimethoxy-2-phenylacetophenone

2,2-dimethoxy-2-phenylacetophenone has been reported in Camellia sinensis with data available. — LOTUS - the natural products occurrence database

IUPAC name: 2,2-dimethoxy-1,2-diphenylethanone

Molecular formula: C16H16O3
Molecular weight: 256.30 g/mol
Exact mass: 256.109944368 Da
XLogP3: 3.0
Topological polar surface area: 35.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

Benzil dimethyl ketalIrgacure 651Ethanone, 2,2-dimethoxy-1,2-diphenyl-Kayacure BDMKBenzil dimethyl acetalEsacure KB 11,2-Diphenyl-2,2-dimethoxyethanoneLucirin BDK

16 more reported names

Photomer 51Irgacure 621Irgacure 641Irgacure E 651Irgacure I 651Benzil mono(dimethyl ketal)Benzil mono(dimethyl acetal)Phenyldimethoxyacetophenone2,2-DimethoxyphenylacetophenoneIrgacure 9512,2-Dimethoxy-1,2-diphenyl-ethanoneIRG 651IR 6511DK0094V28RefChem:441198246-386-6

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL364734
EPA DTXSID:DTXSID7037715
PubMed:37696476
PubMed:22654644
PubMed:22500171
PubMed:22407000
PubMed:22205871
PubMed:22163699
PubMed:22136050
PubMed:21946496
PubMed:21513972
PubMed:21318254
PubMed:21232638
PubMed:20708174

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 PHENYLDIMETHOXYACETOPHENONE

INCI name

PHENYLDIMETHOXYACETOPHENONE

Description

Ethanone, 2,2-dimethoxy-1,2-diphenyl-

Record provenance

Inventory reference: 59282
Imported identity: PHENYLDIMETHOXYACETOPHENONE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for PHENYLDIMETHOXYACETOPHENONE

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Key data

CAS

24650-42-8

246-386-6

Restriction

—

Function

FRAGRANCE: Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#20740 · PHENYLDIMETHOXYACETOPHENONE

Ingredients with overlapping formulation functions

PHENOLANTIMICROBIAL, DENATURANT, DEODORANT, FRAGRANCE, ORAL CARE, PRESERVATIVE

PHENYL BENZOATEFRAGRANCE, PRESERVATIVE

PHENYLACETONITRILEFRAGRANCE

PHENYLALANINEFRAGRANCE, HAIR CONDITIONING, SKIN CONDITIONING

PHENYLISOHEXANOLFRAGRANCE

PHENYLMETHYLPENTANALFRAGRANCE, PERFUMING

PHENYLPROPANOLFRAGRANCE, PERFUMING, SOLVENT

PHIALOPHORA PARASITICA/AQUILARIA AGALLOCHA WOOD FERMENT POWDERFRAGRANCE

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 PHENYLDIMETHOXYACETOPHENONE appears in the CosIng inventory

The CosIng inventory lists PHENYLDIMETHOXYACETOPHENONE 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.

PHENYLDIMETHOXYACETOPHENONE 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

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

FRAGRANCE

CAS 24650-42-8 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 PHENYLDIMETHOXYACETOPHENONE

This page reproduces the CosIng inventory entry for PHENYLDIMETHOXYACETOPHENONE 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 PHENYLDIMETHOXYACETOPHENONE 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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