Ethyl Trans-2-octenoate

Ethyl trans-2-octenoate (CAS Number: 7367-82-0) is a synthetic organic compound belonging to the ester class of flavoring molecules. It is characterized by an eight-carbon chain with a double bond in the trans configuration at the second position, combined with an ethyl ester functional group. This specific chemical structure contributes to its sensory properties, which are described as fruity with subtle vegetable or melon-like undertones. The compound is produced through chemical synthesis and is used exclusively as a flavoring agent in the food industry.

Ethyl trans-2-octenoate is employed as a flavoring adjuvant in various processed food products where fruity or fresh vegetable notes are desired. Its applications typically include beverages, confectionery, dairy products, and prepared foods. The compound is used in very small quantities—consistent with standard flavoring agent practices—to achieve the desired sensory profile without contributing significantly to the overall nutritional composition of the final product. Like most synthetic flavoring compounds, it is formulated into flavor blends alongside other approved ingredients.

According to available FDA records, ethyl trans-2-octenoate has generated zero reported adverse events and zero product recalls. However, it is important to note that this additive has not received GRAS (Generally Recognized as Safe) status from the FDA. The absence of GRAS designation does not inherently indicate a safety concern; rather, it means the compound has not undergone the formal FDA evaluation process for this specific classification, or that a manufacturer has not submitted a GRAS notification petition.

The lack of adverse event reports suggests that any exposure through food consumption to date has not resulted in documented harm. Standard food safety protocols apply to all flavoring agents used in commerce, including safety assessments based on chemical structure, metabolism data, and toxicological testing.

Because this compound is used in trace amounts typical of flavoring agents, direct toxicological studies specific to this chemical may be limited in the published literature. The safety of synthetic flavoring esters generally is well-established through decades of use in food manufacturing, though individual compounds vary in their approval status depending on regulatory jurisdiction and manufacturer submission history.

In the United States, ethyl trans-2-octenoate does not have GRAS status with the FDA. This means it may be used as a food additive only under FDA food additive regulations if it has received formal approval, or it may fall under specific regulatory provisions. Manufacturers using this ingredient must ensure compliance with applicable FDA regulations regarding flavoring substances.

Regulatory status varies internationally. The European Union maintains separate approval processes for flavoring substances under Regulation (EC) No 1334/2008, with specific evaluation procedures for flavor compounds. Other countries including Canada, Japan, and Australia maintain their own lists of approved flavoring agents.

The distinction between GRAS and non-GRAS status does not necessarily reflect safety differences—rather, it reflects the pathway through which a substance has been evaluated and the completeness of manufacturer submissions to regulatory authorities.

Published scientific literature specifically addressing ethyl trans-2-octenoate is limited. Most safety information regarding synthetic flavoring esters derives from chemical class evaluations and structure-activity relationship assessments. The Flavor and Extract Manufacturers Association (FEMA) and the International Organization of the Flavor Industry (IOFI) have established evaluation frameworks for flavoring compounds based on their chemical structure and predicted metabolic pathways.

General safety data on similar eight-carbon ester compounds suggests these molecules are readily metabolized through standard esterase pathways in mammals, limiting systemic accumulation. However, specific in vivo or in vitro studies on this particular compound may be unavailable in public databases, which is not uncommon for individual synthetic flavoring agents used in minor food applications.