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GREENVEIL

  • industrial

E-2-Methyl-2-butenal

CAS 497-03-0

Also registered as 1 other CAS number

6038-09-1

E-2-Methyl-2-butenal chemical structure

Concern score

Not assessed — no hazard data yet.

E-2-Methyl-2-butenal in plain language

What it is

Also known as 2-METHYL-2-BUTENAL · Tiglic aldehyde · trans-2-Methyl-2-butenal · (2E)-2-Methylbut-2-enal · (E)-2-methylbut-2-enal · Tiglinaldehyde

Show all 21 names

TRANS-2,3-DIMETHYLACROLEIN · Trans-tiglaldehyde · (E)-2-METHYL-2-BUTENAL · 2,3-DIMETHYLACROLEIN · 2-BUTENAL, 2-METHYL- · 2-BUTENAL, 2-METHYL-, (e)- · 2-Butenal, 2-methyl-, (2E)- · 2-Methyl-2-butenal, (E)- · 2-Methyl-2-butenal, trans- · 2-Methylbut-2-en-1-al, (E)- · 2-Methylcrotonaldehyde · Crotonaldehyde, 2-methyl-, (E)- · Tiglaldehyde · Tiglic acid aldehyde · trans-Methyl-2-butenal

What it does

Used in consumer products as a fragrance ingredient and a flavouring.

  • Fragrance
  • Flavouring
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. E-2-Methyl-2-butenal appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Fragrance.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence & sources

No graded research studies for E-2-Methyl-2-butenal yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated February 8, 2019

    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 E-2-Methyl-2-butenal in a product composition. These are source records, not Greenveil catalog products.

Named organisations

4

Typical roles

FragranceFlavouring
See products using E-2-Methyl-2-butenal →