(+/-)-2-(5-methyl-5-vinyltetrahydrofuran-2-yl)propionaldehyde

(+/-)-2-(5-methyl-5-vinyltetrahydrofuran-2-yl)propionaldehyde is a synthetic organic compound belonging to the aldehyde class of flavor chemicals. Its chemical structure consists of a tetrahydrofuran ring (a five-membered oxygen-containing ring) with a vinyl group and methyl substituent, coupled to a propionaldehyde moiety. This structural configuration allows it to produce specific aromatic characteristics valued in the flavor industry. The (+/-) designation indicates the compound exists as a racemic mixture, containing equal parts of both left- and right-handed molecular forms.

As a flavoring agent, this compound is employed in the food and beverage industry to create or enhance fruity and woody flavor profiles. It is used in very small concentrations—typically in the parts per million (ppm) range—in products such as beverages, baked goods, confectionery, and processed foods. The specific flavor contribution involves complex fruity and slightly woody notes that can complement or replace natural flavor components. Like most synthetic flavoring compounds, it is formulated into flavor preparations before being added to food matrices, where it is typically present in negligible amounts in the final consumer product.

The FDA has recorded zero adverse events and zero recalls associated with this flavoring agent. This additive has not generated documented safety concerns in the available regulatory databases. However, it is important to note that this compound does not hold GRAS (Generally Recognized as Safe) status from the FDA, meaning it has not undergone the formal FDA review process for GRAS determination. This absence of GRAS status does not inherently indicate a safety concern; rather, it reflects that formal GRAS documentation has not been submitted to or accepted by the FDA.

The lack of adverse event reports and recalls suggests that if this compound is used in food products, it has not been associated with consumer harm or public health incidents in the United States. Typical safety considerations for aldehyde-based flavor compounds include acute toxicity testing, genotoxicity studies, and repeated-dose toxicity assessments. The use of such compounds in flavoring applications generally involves exposure at extremely low levels, which is an important factor in overall risk assessment.

This flavoring agent's regulatory status varies by jurisdiction. In the United States, it does not have GRAS status, but this does not prohibit its use—it may be employed under FDA regulations for food additives or as part of flavoring mixtures without formal GRAS designation. The FDA permits certain flavoring substances to be used based on established safety data and industry standards, even without GRAS status. In the European Union, flavoring substances are regulated under Regulation (EC) No 1334/2008, though specific approval status for this particular compound varies and should be verified with current EU flavor substance inventories. Different countries maintain their own approved lists of flavoring agents, and manufacturers must ensure compliance with applicable regulations in each market where their products are sold.

Specific published peer-reviewed studies dedicated solely to this compound are limited in the publicly available scientific literature. Safety evaluations for synthetic flavor compounds of this type typically rely on structural analogs, ADME (absorption, distribution, metabolism, excretion) data, and standardized toxicological testing protocols established by flavor industry associations such as the International Organization of the Flavor Industry (IOFI) and the Flavor and Extract Manufacturers Association (FEMA). Such evaluations consider the chemical's metabolic fate, potential for bioaccumulation, and genotoxic potential. The absence of documented adverse events and regulatory recalls provides practical evidence that this compound, when used in accordance with flavoring application standards, has not demonstrated safety issues in commercial food applications.