# 2-ethyl-3,(5 Or 6)-dimethylpyrazine

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**Safety rating:** UNKNOWN
**CAS number:** 27043-05-6
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

2-ethyl-3,(5 or 6)-dimethylpyrazine is a synthetic flavoring compound belonging to the pyrazine chemical family. It is used in food manufacturing to impart nutty, roasted, and savory flavor notes to various processed foods and beverages.

## 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 2-ethyl-3,(5 or 6)-dimethylpyrazine?

2-ethyl-3,(5 or 6)-dimethylpyrazine is a synthetic organic compound classified as a pyrazine, a heterocyclic aromatic chemical. The compound exists as a positional isomer, meaning the methyl groups can be located at either the 5 or 6 position on the pyrazine ring structure. It is registered under CAS Number 27043-05-6 and appears in food ingredient databases as a flavoring agent designed to replicate roasted and nutty taste profiles found naturally in foods like nuts, coffee, and grains.

## Common Uses

This pyrazine derivative is employed in the food industry as a flavoring adjuvant, typically used in small quantities to enhance or modify the sensory characteristics of processed foods. Common applications include:

- Savory snack foods and potato chip flavorings
- Meat and poultry seasoning blends
- Processed cheese products
- Baked goods and bread flavorings
- Soup mixes and seasoning packets
- Savory sauce preparations
- Processed meat products

Pyrazines as a chemical class are known for producing roasted, toasted, and umami-like flavor notes that manufacturers use to create or enhance desirable taste characteristics without adding natural roasting or fermentation processes.

## Safety Assessment

Current available data on 2-ethyl-3,(5 or 6)-dimethylpyrazine indicates no reported adverse events or recalls associated with the additive in FDA databases. The compound has not been formally evaluated through the FDA's Generally Recognized as Safe (GRAS) petition process, indicating it does not hold official GRAS status in the United States.

The safety profile of pyrazine compounds has been studied since they are naturally occurring substances found in many foods. General toxicological data for pyrazine derivatives suggests low acute toxicity when used in typical flavoring applications. However, the specific toxicological profile for this particular isomer combination should be considered when evaluating safety.

As with many synthetic flavoring compounds, use is governed by quantity restrictions established by food safety authorities. These substances are typically used in flavoring applications at parts-per-million (ppm) levels, well below any levels shown to cause concern in available toxicological studies.

## Regulatory Status

2-ethyl-3,(5 or 6)-dimethylpyrazine does not currently hold FDA GRAS status in the United States. This status indicates the compound has not undergone the formal GRAS notification process, though it may be permitted as a synthetic flavoring ingredient under FDA regulations 21 CFR 182.60, which provides a list of acceptable synthetic flavoring agents.

The additive is listed in food ingredient databases and may be used in food manufacturing under general flavoring ingredient allowances, though specific usage levels and application categories may be regulated. Regulatory approval and permitted use levels may vary internationally, with different requirements in the European Union, Canada, and other jurisdictions.

Manufacturers intending to use this ingredient should verify current regulatory compliance in their target markets and maintain documentation regarding usage levels and food applications.

## Key Studies

Limited published literature is specifically available for 2-ethyl-3,(5 or 6)-dimethylpyrazine as an individual compound. The safety assessment of pyrazine compounds generally relies on:

- Structural class toxicology studies on pyrazine derivatives
- Comparative data on similar synthetic flavoring agents
- Historical use data in food applications
- General toxicological principles established for volatile flavor compounds

The absence of reported adverse events or recalls in FDA databases, combined with the low exposure levels typical of flavoring applications, suggests the compound has not demonstrated safety concerns in its current use pattern. However, comprehensive peer-reviewed safety studies specific to this isomer appear limited in published scientific literature, which is common for many minor flavoring agents used in parts-per-million quantities.

## 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-ethyl-3,(5 Or 6)-dimethylpyrazine — Safety, regulation, and evidence." https://additivefacts.com/additives/2-ethyl-3-5-or-6-dimethylpyrazine. Accessed 2026-05-19.