# Methyl 3-phenylpropionate

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**Safety rating:** UNKNOWN
**CAS number:** 103-25-3
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Methyl 3-phenylpropionate (CAS 103-25-3) is an organic ester compound used as a flavoring agent in food products. It contributes fruity, floral, or sweet aromatic notes to various food and beverage formulations.

## Regulatory status

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

## Detailed analysis

## What is Methyl 3-phenylpropionate?

Methyl 3-phenylpropionate is an organic ester with the chemical formula C6H5CH2CH2COOCH3. It belongs to the class of synthetic flavor compounds known as phenylpropionate esters. The compound consists of a phenyl group (benzene ring) attached to a propionic acid chain, with the carboxylic acid group esterified as a methyl ester. This structure gives the compound characteristic fruity and floral aromatic properties.

## Common Uses

Methyl 3-phenylpropionate is primarily used as a flavoring agent in the food and beverage industry. It is employed in the formulation of:

- Confectionery products and candies
- Baked goods and pastries
- Dairy products including ice cream and yogurt
- Beverages such as soft drinks and flavored waters
- Processed foods requiring fruity or floral flavor enhancement

The compound is typically used in small quantities, as is standard practice with flavor compounds, to achieve the desired sensory profile without overwhelming other flavor components.

## Safety Assessment

Methyl 3-phenylpropionate has not been formally evaluated or approved by the U.S. Food and Drug Administration (FDA) as a Generally Recognized As Safe (GRAS) substance. However, the compound demonstrates a favorable safety profile based on available data:

- The FDA has recorded zero adverse events associated with this additive
- No recalls involving this substance have been documented in FDA records
- The chemical structure is consistent with other approved flavoring esters
- The compound undergoes standard metabolic pathways similar to naturally occurring esters

As an ester, methyl 3-phenylpropionate would be expected to undergo hydrolysis in the gastrointestinal tract, breaking down into phenylpropionic acid and methanol. Both resulting compounds have established metabolic fates in the body.

## Regulatory Status

In the United States, methyl 3-phenylpropionate is not listed on the FDA's GRAS list, meaning it has not received formal GRAS determination. Despite this, it may be used in foods under the Food Additives Amendment provisions if it has been accepted as a food additive or if manufacturers can demonstrate its safety through appropriate testing.

The compound's regulatory status varies internationally. In the European Union, flavor compounds are regulated under Commission Regulation (EC) No 1334/2008. Specific approvals depend on individual member state determinations and EFSA assessments.

Manufacturers using methyl 3-phenylpropionate must comply with all applicable food labeling regulations and declare it appropriately in ingredient statements where required by jurisdiction.

## Key Studies

Limited peer-reviewed literature specifically addressing methyl 3-phenylpropionate exists in the public domain. The safety evaluation of this compound relies on:

- General toxicological knowledge of similar phenylpropionate esters
- Chemical structural similarity to approved flavoring compounds
- Established metabolic pathways for comparable ester compounds
- The absence of reported adverse events in regulatory databases

The compound's safety profile is consistent with other synthetic flavoring esters used in food products. Standard toxicity testing would include acute toxicity, subchronic toxicity, and genotoxicity assessments as part of any formal regulatory approval process.

## 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. "Methyl 3-phenylpropionate — Safety, regulation, and evidence." https://additivefacts.com/additives/methyl-3-phenylpropionate. Accessed 2026-05-19.