What is (+/-)-2-phenyl-4-methyl-2-hexenal?
(+/-)-2-phenyl-4-methyl-2-hexenal, identified by CAS Number 26643-92-5, is a synthetic flavoring compound belonging to the class of organic aldehydes. The molecule contains a phenyl ring (benzene ring) attached to a six-carbon chain with a methyl branching group and an aldehyde functional group. The (+/-) designation indicates that the compound exists as a racemic mixture, containing equal proportions of two mirror-image molecular forms (enantiomers). This chemical structure contributes to its sensory properties when used in food applications.
Common Uses
This flavoring agent is utilized primarily in the food and beverage industry to enhance or create specific aromatic profiles. Its applications typically include:
- Flavoring in beverages, particularly alcoholic drinks and non-alcoholic beverages
- Enhancement of confectionery products
- Flavoring components in processed foods where complex taste notes are desired
- Fragrance applications in food manufacturing
The compound's phenolic and aldehydic structural features allow it to contribute woody, aromatic, and slightly sweet sensory notes to food formulations. Manufacturers typically use this substance at low concentrations, as is standard practice with synthetic flavor compounds.
Safety Assessment
According to FDA records, this additive has generated zero reported adverse events and zero product recalls associated with its use in food. These metrics indicate no documented safety incidents in the United States marketplace.
The compound has not received FDA GRAS (Generally Recognized As Safe) designation, which means it has not undergone the formal GRAS notification process. However, the absence of a GRAS determination does not necessarily indicate a safety concern; rather, it may reflect that manufacturers have chosen not to pursue formal GRAS status or that the additive has limited commercial applications requiring such designation.
As a synthetic flavoring agent, this compound would be subject to FDA regulations governing food additives. Food manufacturers using such substances must ensure compliance with applicable regulations, including proper labeling and appropriate usage levels. The lack of adverse event reports and recalls suggests that where the product has been marketed, it has not raised safety red flags in post-market surveillance systems.
Regulatory Status
In the United States, this compound is not listed on the FDA's GRAS list, meaning it would require food additive petition approval or must be used under an existing food additive regulation for synthetic flavoring substances. The FDA permits the use of certain synthetic flavoring agents under Title 21 CFR Part 182, which establishes safety standards for substances Generally Recognized As Safe for their intended use.
The regulatory pathway for synthetic flavoring compounds typically involves toxicological evaluation and demonstration of safety at intended usage levels. The absence of enforcement actions or regulatory restrictions suggests this substance has not raised safety concerns sufficient to prompt FDA intervention.
International regulatory approaches may vary. Manufacturers exporting products containing this additive should verify compliance with regulations in relevant jurisdictions, including European Union regulations on flavoring substances.
Key Studies
Limited peer-reviewed scientific literature is readily available regarding this specific compound's safety profile, reflecting its relatively narrow commercial application among the thousands of permitted flavoring substances. Safety evaluations for synthetic flavor compounds typically rely on structure-activity relationship modeling, toxicological testing for novel substances, and post-market surveillance data.
The chemical structure of this compound—featuring a phenyl group and aldehyde functional group—allows toxicologists to apply predictive models based on similar compounds' known safety profiles. The absence of adverse event reports after years of potential use suggests adequate safety margins at typical food application levels.
When evaluating flavor compounds, regulatory agencies consider acute toxicity, chronic toxicity potential, and metabolic fate. The zero adverse event history indicates that at permitted use levels, this substance has not demonstrated toxicological concerns in real-world application.