# Cis- And Trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate

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**Safety rating:** UNKNOWN
**CAS number:** 6290-17-1
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Cis- and trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate is a synthetic flavoring compound used to impart fruity and herbaceous notes in food products. It belongs to a class of organic compounds designed to enhance aroma and taste in 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 Cis- and Trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate?

Cis- and trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate (CAS Number 6290-17-1) is a synthetic flavoring agent belonging to the dioxolane family of chemical compounds. This additive exists in two isomeric forms—cis and trans—which have identical molecular composition but differ in their three-dimensional spatial arrangement. Such isomers can sometimes exhibit different sensory properties, though both forms are typically included in this ingredient specification.

## Common Uses

This flavoring compound is primarily used in the food and beverage industry to create fruity, tropical, and herbaceous flavor profiles. It may be incorporated into products such as soft drinks, flavored waters, confectionery, baked goods, dairy products, and other processed foods where complex fruit or botanical notes are desired. The compound's specific aroma characteristics make it valuable in formulations where manufacturers seek to replicate natural fruit essences or create novel flavor combinations.

Due to its synthetic nature and specific flavor profile, this ingredient is typically used at very low concentrations—often measured in parts per million—since flavoring agents are designed to be potent and require only small amounts to achieve desired sensory effects.

## Safety Assessment

This additive has not been granted Generally Recognized as Safe (GRAS) status by the FDA, which means it does not have formal FDA approval under the GRAS classification pathway. However, the absence of GRAS status does not indicate unsafe use; rather, it reflects that formal GRAS notification or petition processes have not been completed for this specific compound.

The FDA's adverse events database contains zero reported adverse events associated with this additive, and there have been no product recalls linked to its use. These metrics suggest that if this ingredient has been used in foods available to consumers, it has not generated safety signals requiring regulatory action or consumer warnings.

The limited toxicological literature specifically addressing this compound means that comprehensive safety data may be restricted to proprietary studies or manufacturer documentation not readily available in public databases. This is not uncommon for minor-use flavor ingredients with narrow application.

## Regulatory Status

The regulatory pathway for this additive varies by jurisdiction. In the United States, flavoring agents may be used under FDA regulations (21 CFR Part 182 and 184) if they meet specific criteria or have been approved through various petitioning processes. The European Food Safety Authority (EFSA) maintains its own register of approved flavoring compounds, with different evaluation standards and approval processes than the FDA.

The lack of GRAS status in the United States suggests this ingredient may operate under a specific food additive petition approval, or it may be subject to restrictions on its use, concentration levels, or application categories. Manufacturers using this ingredient should maintain compliance with applicable regulations in their target markets, as status varies internationally.

## Key Studies

Published safety literature specifically examining cis- and trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate appears limited in the open scientific domain. Safety evaluations for synthetic flavoring compounds of this type typically involve acute and subchronic toxicity testing, often conducted by ingredient manufacturers as part of regulatory submissions. Standard testing protocols may include oral toxicity studies in rodent models, though results from proprietary studies are not always disclosed publicly.

The chemical structure—containing a stable dioxolane ring with acetate functionality—suggests it would undergo typical metabolic pathways for similar esters and organic compounds. However, specific pharmacokinetic or metabolic data for this particular isomer combination is not readily accessible in peer-reviewed literature.

## 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. "Cis- And Trans-ethyl 2,4-dimethyl-1,3-dioxolane-2-acetate — Safety, regulation, and evidence." https://additivefacts.com/additives/cis-and-trans-ethyl-2-4-dimethyl-1-3-dioxolane-2-acetate. Accessed 2026-05-19.