# 1-ethyl-2-pyrrolecarboxaldehyde

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**Safety rating:** UNKNOWN
**CAS number:** 2167-14-8
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

1-ethyl-2-pyrrolecarboxaldehyde (CAS 2167-14-8) is a synthetic flavoring compound used to create savory, roasted, and meaty flavor profiles in processed foods. This pyrrole-based aldehyde functions as a flavoring agent to enhance or replicate desirable taste characteristics in various food products.

## 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 1-ethyl-2-pyrrolecarboxaldehyde?

1-ethyl-2-pyrrolecarboxaldehyde is a synthetic organic compound belonging to the pyrrole family of chemicals. Its molecular structure consists of a five-membered aromatic nitrogen-containing ring (pyrrole) with an aldehyde functional group at position 2 and an ethyl substituent at position 1. This specific chemical configuration contributes to its distinctive sensory properties in food applications.

## Common Uses

This flavoring agent is employed in the food industry to create complex flavor profiles, particularly those associated with savory, roasted, and meat-like characteristics. It may be used in processed meat products, soups, broths, gravies, snack foods, and savory condiments where authentic roasted or cooked meat flavors are desired. The compound works synergistically with other flavor components to enhance overall taste complexity and consumer appeal.

## Safety Assessment

According to available FDA data, there have been zero reported adverse events associated with 1-ethyl-2-pyrrolecarboxaldehyde and zero product recalls involving this additive. The compound has not been formally designated as Generally Recognized As Safe (GRAS) by the FDA, meaning it has not undergone the formal GRAS notification process. However, the absence of adverse event reports and recalls suggests no documented safety concerns have emerged from its use in food applications.

Like many synthetic flavoring agents, 1-ethyl-2-pyrrolecarboxaldehyde is typically used at very low concentrations (parts per million range), which substantially limits potential exposure. The flavoring industry operates under FDA regulations that require flavorings to be used in quantities consistent with good manufacturing practices and at levels that do not exceed those reasonably expected to achieve their intended effect.

## Regulatory Status

The regulatory status of 1-ethyl-2-pyrrolecarboxaldehyde varies by jurisdiction. In the United States, it may be used in food under FDA regulations governing synthetic flavoring substances, though it has not completed the formal GRAS notification process. The European Union maintains its own evaluation system through the European Food Safety Authority (EFSA) for flavoring compounds, with specific approvals and restrictions that may differ from U.S. regulations.

Manufacturers using this flavoring agent must comply with labeling requirements and food safety regulations in their respective markets. In many regions, synthetic flavorings can be simply labeled as "artificial flavor" rather than listing the specific chemical compound name.

## Key Studies

Publicly available toxicological studies specifically focused on 1-ethyl-2-pyrrolecarboxaldehyde are limited in the scientific literature. The lack of published safety studies does not necessarily indicate safety concerns but rather reflects the reality that many synthetic flavorings undergo internal safety assessments by manufacturers and contract research organizations rather than publication in peer-reviewed journals.

The broader category of pyrrole compounds and aldehyde-containing flavorings has been studied for general safety characteristics. Industry-standard toxicological testing would typically include acute toxicity, mutagenicity, and sub-chronic toxicity assessments conducted according to OECD guidelines. However, specific detailed results for this particular compound are not readily accessible in public databases.

The FDA's Flavor and Extract Manufacturers' Association (FEMA) maintains the GRAS list of flavoring substances, providing a valuable reference for approved flavoring ingredients, though this particular compound is not listed.

## 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. "1-ethyl-2-pyrrolecarboxaldehyde — Safety, regulation, and evidence." https://additivefacts.com/additives/1-ethyl-2-pyrrolecarboxaldehyde. Accessed 2026-05-19.