What is (E)-7-methyl-3-octen-2-one?
(E)-7-methyl-3-octen-2-one, identified by CAS number 977185-27-5, is a synthetic organic compound belonging to the ketone family of flavor chemicals. The compound's chemical structure features a methyl-substituted octenone backbone with a specific geometric configuration denoted by the (E) designation. This flavoring ingredient is manufactured through chemical synthesis rather than derived from natural sources, though it may be designed to replicate flavor profiles found in nature.
Common Uses
This compound functions as a flavoring agent in the food and beverage industry, where it contributes fruity, apple-like, and floral notes to finished products. It may be used in:
- Beverage formulations (soft drinks, flavored waters, alcoholic beverages)
- Confectionery and candy products
- Baked goods and desserts
- Dairy products and yogurts
- Savory food applications
- Flavor compound mixtures and concentrates
As a flavoring adjuvant, it is typically used in very small quantities—measured in parts per million—to achieve desired sensory properties without significantly impacting product composition.
Safety Assessment
No adverse events related to (E)-7-methyl-3-octen-2-one have been reported to the FDA, and no food recalls have been associated with this ingredient. The absence of reported incidents suggests a relatively benign safety profile in current food applications. However, comprehensive toxicological data on this specific compound appears limited in publicly available scientific literature.
As with most synthetic flavor compounds used at extremely low concentrations, exposure through food consumption is expected to be minimal. The flavoring industry typically applies safety principles including threshold of regulation (TOR) concepts and flavor threshold methodology when evaluating such ingredients.
Regulatory Status
(E)-7-methyl-3-octen-2-one has not received FDA GRAS (Generally Recognized as Safe) status. This does not indicate the substance is unsafe; rather, it reflects that formal GRAS affirmation or petition has not been submitted to or approved by the FDA. The ingredient may still be used in foods if it complies with FDA regulations for food additives and appropriate safety documentation is maintained by manufacturers.
The regulatory approach for flavoring substances varies globally. In the European Union, similar compounds are evaluated by the European Food Safety Authority (EFSA) and assessed for inclusion on permitted flavoring lists. Manufacturers using this ingredient are responsible for ensuring compliance with regulations in their specific markets of distribution.
Manufacturers typically maintain safety dossiers and toxicological data for such compounds, though these are proprietary and not always publicly disclosed unless submitted during regulatory review processes.
Key Studies
Limited peer-reviewed literature specifically addresses (E)-7-methyl-3-octen-2-one in isolation. Safety assessment for similar methyl ketone flavor compounds generally relies on:
- Structure-activity relationship (SAR) analysis comparing the compound to chemically similar, well-characterized substances
- General toxicology principles established for the flavor compound category
- Historical use data and absence of reported adverse events
- Dose exposure calculations based on anticipated use levels in foods
The flavor and fragrance industry maintains collaborative databases and safety evaluations through organizations like the International Fragrance Association (IFA) and the Flavor and Extract Manufacturers Association (FEMA), which conduct ongoing safety assessments of flavor compounds based on available scientific evidence.
Researchers and regulatory bodies continue to evaluate emerging flavor compounds using modern toxicological methods. For specific safety data on this ingredient, interested parties should contact manufacturers or consult proprietary safety databases maintained by the flavor industry.