# 2,3,3-trimethylindanone

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**Safety rating:** UNKNOWN
**CAS number:** 54440-17-4
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-04

## Summary

2,3,3-Trimethylindanone is a synthetic flavoring compound used to impart woody and aromatic notes in food products. It is not currently approved as Generally Recognized as Safe (GRAS) by the FDA, though it has no documented adverse events or recalls associated with its use.

## Regulatory status

| Country | Status |
| --- | --- |
| United States | approved |
| European Union | not_evaluated |
| United Kingdom | approved |
| Canada | approved |
| Australia | approved |
| Japan | approved |
| South Korea | approved |
| Brazil | approved |
| China | approved |
| India | approved |

## Detailed analysis

## What is 2,3,3-Trimethylindanone?

2,3,3-Trimethylindanone (CAS Number: 54440-17-4) is a synthetic organic compound belonging to the indanone family of chemicals. It is a colorless to pale yellow liquid with a woody, aromatic odor profile. The compound's chemical structure consists of a fused benzene-cyclopentanone ring system with three methyl group substituents. In the flavor industry, this compound functions as a flavoring agent or adjuvant, contributing subtle woody and aromatic characteristics to food formulations.

## Common Uses

2,3,3-Trimethylindanone is utilized in the fragrance and flavor industries as a component in complex flavor formulations. Its primary application is in creating woody and aromatic flavor notes in beverages, confectionery, and other food products where such sensory characteristics are desired. The compound is typically used in very small quantities, as is standard practice with synthetic flavor compounds. It may be incorporated into flavor blends rather than used as a standalone additive. The woody aromatic profile makes it suitable for applications requiring depth and complexity in flavor profiles, particularly in premium or specialty food formulations.

## Sources

- FDA Substances Added to Food (CFSAN)
- OpenFDA Adverse Event Reporting System (AERS)
- OpenFDA Food Recalls
- EFSA OpenFoodTox
- EU Food Additive Portal

## Citation

Additive Facts. "2,3,3-trimethylindanone — Safety, regulation, and evidence." https://additivefacts.com/additives/2-3-3-trimethylindanone. Accessed 2026-05-20.