# Isomethylpseudoionone

URL: https://app.greenveil.ai/ingredients/ingredient_cas_1117_41_5
Categories: beauty, industrial
Identifier: 1117-41-5

> Isomethylpseudoionone. Greenveil chemical-concern score: 100/100 — Critical concern based on regulatory listings.. Assessed from 3 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern based on regulatory listings.
- Confidence: 4
- Rationale: 3,6,10-Trimethyl-3,5,9-undecatrien-2-one (Pseudo-Isomethyl ionone), when used as a fragrance ingredient is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

## Regulatory status

- EU: banned — Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
- US: commercial use observed — EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.

_Assessed by Greenveil._