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  • beauty
  • cleaning

2-Pentenoic acid, 2-methyl-, (2E)-

CAS 3142-72-1

Also registered as 2 other CAS numbers

1628063-57-9 · 16957-70-3

2-Pentenoic acid, 2-methyl-, (2E)- chemical structure

Concern score

Not assessed — no hazard data yet.

2-Pentenoic acid, 2-methyl-, (2E)- in plain language

What it is

On cosmetic ingredient lists it appears as “TRANS-2-METHYLPENT-2-ENOIC acid”.

Also known as TRANS-2-METHYLPENT-2-ENOIC acid · 2-METHYL-2-PENTENOIC acid · (2E)-2-Methylpent-2-enoic acid · (E)-2-methylpent-2-enoic acid · 2-METHYL-2-PENTENOIC acid, (2E)- · 2-METHYL-2-PENTENOIC acid, trans-

Show all 17 names

2-PENTENOIC acid, 2-METHYL-, (e)- · TRANS-2-METHYL-2-PENTENOIC acid · (2E)-2-Methyl-2-pentenoic acid · (E)-2-METHYL-2-PENTENOIC acid · (E)-2-Methylpent-2-en-1-oic acid · (E)-2-methylpent-2-enoicacid · 2-Pentene-2-carboxylicacid · 2-Pentenoic acid, 2-methyl- · Jjywrqllqaknad-snawjcmrsa-n · Strawberry acid · UNII-44I99E898B

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
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. 2-Pentenoic acid, 2-methyl-, (2E)- appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 14 composition records across product categories including Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Fragrance.
    • EPA CPDat observed this chemical in 14 composition records across product categories including Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for 2-Pentenoic acid, 2-methyl-, (2E)-. 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 2-Pentenoic acid, 2-methyl-, (2E)- yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated 2020-03-19

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    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 2-Pentenoic acid, 2-methyl-, (2E)- in a product composition. These are source records, not Greenveil catalog products.

Source records

14

Named organisations

3

Cleaning products and household care

Typical roles

PerfumingFragrance
See products using 2-Pentenoic acid, 2-methyl-, (2E)- →