What is 5-isopropenyl-2-methyl-2-vinyltetrahydrofuran?
5-isopropenyl-2-methyl-2-vinyltetrahydrofuran (CAS Number 13679-86-2) is a synthetic organic compound belonging to the class of volatile flavor compounds. It features a tetrahydrofuran ring structure—a five-membered oxygen-containing ring—with isopropenyl and vinyl substituents. This structural configuration allows it to provide fruity, woody, and spicy aromatic characteristics to food products. The compound is volatile, meaning it readily releases into the air and interacts with olfactory receptors, contributing to both taste and smell perception.
Common Uses
This flavoring agent is used in the food industry to enhance the sensory profile of various products. Primary applications include:
- Beverages (soft drinks, juices, alcoholic drinks)
- Confectionery and candy products
- Baked goods and grain-based foods
- Dairy products
- Savory snacks and seasonings
Typically, flavoring compounds of this type are used in very small concentrations, measured in parts per million (ppm), to achieve the desired taste and aroma effects without creating overwhelming sensory profiles.
Safety Assessment
The FDA has not granted this compound GRAS (Generally Recognized as Safe) status, meaning it has not been formally affirmed through the GRAS notification process. However, this designation does not indicate that the compound is unsafe; rather, it reflects that formal GRAS documentation has not been submitted or completed through FDA channels.
Relevant safety considerations include:
**Absence of Adverse Events**: No adverse events related to this flavoring compound have been reported to the FDA, indicating no documented cases of consumer harm attributable to its use in food products.
**No Recalls**: The FDA database contains no recalls associated with this additive, further suggesting a safety profile consistent with proper use in food manufacturing.
**Toxicological Profile**: As a synthetic flavoring compound, it would typically undergo assessment for acute toxicity, repeated-dose toxicity, and potential genotoxicity. The structural characteristics and volatility of this compound suggest it is unlikely to accumulate in body tissues.
**Limited Public Data**: Comprehensive toxicological studies and safety data specific to this compound may be limited in the public scientific literature, which is common for specialized food flavoring ingredients used in minimal quantities.
Regulatory Status
This compound operates under variable regulatory frameworks depending on geography:
- **United States**: Not GRAS-affirmed by FDA but permitted for use as a food additive subject to FDA regulations and Good Manufacturing Practices (GMP). Manufacturers must ensure use levels are safe and comply with 21 CFR Part 182 flavor regulations.
- **European Union**: EFSA (European Food Safety Authority) maintains separate assessments of flavoring compounds. Status in EU regulations may differ from FDA status.
- **Japan and Other Markets**: Individual country food safety authorities maintain independent approval processes.
Manufacturers using this ingredient must maintain documentation of safety justification and use levels.
Key Studies
Published scientific literature specific to 5-isopropenyl-2-methyl-2-vinyltetrahydrofuran is limited. The compound falls within a broader category of naturally-derived and synthetic flavor compounds that have been studied collectively. General safety principles for volatile organic compounds in food flavoring suggest:
- Rapid absorption and metabolism through standard detoxification pathways
- Limited bioaccumulation potential due to volatility and structural properties
- Safety margins typically achieved through minimal use concentrations
Additional research publications on related tetrahydrofuran derivatives and synthetic flavor compounds provide context for understanding this ingredient's safety profile, though direct studies would provide more definitive information.