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1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one

CAS 7779-30-8

Concern score

Not assessed — no hazard data yet.

1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one in plain language

What it is

On cosmetic ingredient lists it appears as “1-TRIMETHYL-2-CYCLOHEXENYL-1-PENTEN-3-ONE”.

Also known as 1-TRIMETHYL-2-CYCLOHEXENYL-1-PENTEN-3-ONE · 1-(2,6,6-Trimethylcyclohex-2-en-1-yl)pent-1-en-3-one · (1E)-1-(2,6,6-Trimethylcyclohex-2-en-1-yl)Pent-1-en-3-one · 1-(2,2,6-Trimethylcyclohex-2-en-1-yl)-1-penten-3-one · 1-(2,6,6-Trimethyl-2-cyclohexene-1-yl)-1-penten-3-one · 1-(2,6,6-Trimethyl-2-cyclohexenyl)pent-1-en-3-one

Show all 12 names

1-(2,6,6-trimethyl-2-cyclohexen-1-yl)pent-1-en-3-one · 1-penten-3-one, 1-(2,6,6- trimethyl-2-cyclohexen-1-yl)- · 5-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-4-penten-3-one · Methyl-alpha-ionone · PENT-1-EN-3-ONE, 1-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)- · alpha-methyl ionone

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
  • Flavouring
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 8 composition records across product categories including Personal care, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.
    • EPA CPDat observed this chemical in 8 composition records across product categories including Personal care, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.Source →

Expert safety opinions

No expert opinion on file for 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

3 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated June 2019

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one in a product composition. These are source records, not Greenveil catalog products.

Source records

8

Named organisations

6

Personal careCleaning products and household care

Typical roles

PerfumingFragranceFlavouring
See products using 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one →

Catalog

Found in these products

Cosmetic and personal-care products that list 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one are shown first. Their ingredient lists include 1-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-1-penten-3-one; each product's own rating depends on its whole formula, so it is shown on the product page, not here.