# Terpinyl Isobutyrate

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**Safety rating:** UNKNOWN
**CAS number:** 7774-65-4
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-04

## Summary

Terpinyl isobutyrate is a synthetic flavoring compound derived from terpenes, used to impart fruity and herbal notes in food and beverage products. It functions as a flavoring agent to enhance taste profiles in various processed foods.

## 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 Terpinyl Isobutyrate?

Terpinyl isobutyrate (CAS Number 7774-65-4) is a synthetic organic compound classified as a flavoring agent. It is an ester formed from terpineol (a naturally occurring terpene alcohol found in essential oils) and isobutyric acid. The compound belongs to the broader category of terpene-derived flavor compounds, which are widely used in the food industry to create complex taste and aroma profiles.

The molecular structure of terpinyl isobutyrate allows it to volatilize readily, making it effective in delivering fruity, woody, and herbal flavor notes. These characteristics make it particularly valuable in formulating beverages, confections, and processed food products where enhanced flavor complexity is desired.

## Common Uses

Terpinyl isobutyrate is primarily used in the flavoring industry as a component of flavor compounds and essential oil replacements. It appears in food applications including:

- Beverages (soft drinks, alcoholic drinks, flavored waters)
- Confectionery products (candies, chewing gums)
- Baked goods and snacks
- Dairy products (yogurts, flavored milk)
- Processed foods requiring flavor enhancement

The compound is typically used in very small quantities, measured in parts per million (ppm), as is standard practice with synthetic flavoring agents. Formulators select terpinyl isobutyrate based on its specific sensory profile and compatibility with other flavor ingredients in complex flavor systems.

## Safety Assessment

Terpinyl isobutyrate has not been formally evaluated and approved by the FDA as a Generally Recognized As Safe (GRAS) substance. However, this designation does not indicate the substance is unsafe; rather, it reflects that comprehensive GRAS documentation has not been submitted to or reviewed by the FDA for this specific compound.

The FDA's adverse events database contains zero reported incidents associated with terpinyl isobutyrate, and no product recalls involving this ingredient have been documented. This absence of adverse event reports suggests no significant safety concerns have emerged from its use in food products.

The compound's safety profile is partially supported by the safety history of its precursor compounds. Terpineol and isobutyric acid are both established food ingredients with documented safety records. However, the specific toxicological properties of terpinyl isobutyrate would require dedicated safety studies for complete characterization.

## Regulatory Status

In the United States, terpinyl isobutyrate operates under the FDA's flavor regulations. Flavoring substances that are not GRAS-affirmed may still be legally used in food if they comply with applicable regulations and specifications, though comprehensive safety documentation is advisable.

The European Food Safety Authority (EFSA) maintains evaluations of flavoring compounds through its FLAVIS database. Regulatory acceptance varies by jurisdiction, and manufacturers must verify compliance with local food additive regulations before using this ingredient in specific markets.

The absence of a specific FDA GRAS determination should not be interpreted as an indication of safety concerns, but rather indicates that formal GRAS documentation has not been completed or submitted for regulatory review.

## Key Studies

Limited published peer-reviewed research specifically addresses terpinyl isobutyrate in isolation. Safety evaluations typically occur as part of broader assessments of terpene-derived flavor compounds. Relevant research includes general toxicological studies on structurally related terpene esters and established safety data on constituent compounds.

The lack of adverse event reports and recalls, combined with zero documented safety incidents over decades of food industry use, suggests the compound has a reasonable safety margin when used at typical flavoring levels. However, comprehensive toxicological studies specifically designed for this compound would strengthen the safety database.

Research on similar terpene-derived esters indicates that compounds in this class are generally well-tolerated at food-relevant exposure levels, though individual assessments are warranted.

## 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. "Terpinyl Isobutyrate — Safety, regulation, and evidence." https://additivefacts.com/additives/terpinyl-isobutyrate. Accessed 2026-05-20.