What is 3-methyl-5-propyl-2-cyclohexen-1-one?
3-methyl-5-propyl-2-cyclohexen-1-one (CAS Number: 3720-16-9) is a synthetic organic compound belonging to the class of flavor chemicals. It is a cyclohexenone derivative characterized by a six-membered carbon ring with a double bond and alkyl substituents. This structure gives it distinctive aromatic properties that food manufacturers utilize to create specific flavor profiles in finished products.
Common Uses
This flavoring agent is primarily used in the food and beverage industry to provide woody, herbal, and slightly spicy flavor notes. It is typically employed in small concentrations in products such as beverages, confectionery, baked goods, and savory snacks. The compound is valued for its ability to enhance and round out complex flavor formulations, often used in combination with other flavoring agents to achieve desired taste profiles. As a synthetic compound, it allows food manufacturers to precisely control flavor consistency across batches.
Safety Assessment
According to FDA records, there have been zero reported adverse events associated with 3-methyl-5-propyl-2-cyclohexen-1-one and no FDA recalls involving this additive. The absence of adverse event reports suggests that at current levels of use in food products, this compound has not caused documented health concerns in the consumer population.
Like most flavor chemicals, safety assessment relies on toxicological data and usage levels. Flavoring agents are typically used in very small quantities—often measured in parts per million (ppm)—which significantly reduces potential exposure. The actual safety profile depends on factors including concentration used, frequency of consumption, and individual sensitivity.
The compound's chemical structure does not contain known toxic functional groups, and its molecular weight and properties suggest limited bioaccumulation potential. However, comprehensive toxicological studies on this specific compound may be limited in publicly available literature.
Regulatory Status
3-methyl-5-propyl-2-cyclohexen-1-one is not on the FDA's GRAS (Generally Recognized as Safe) list. This designation does not indicate the substance is unsafe; rather, it means the compound has not undergone the formal GRAS notification process or been granted GRAS status through petition. Some flavor chemicals operate under food additive regulations rather than GRAS status, requiring FDA approval before use.
In the European Union, flavor substances are regulated under Commission Regulation (EC) No 1334/2008. Individual flavor chemicals may be evaluated differently across regulatory jurisdictions, and approval status can vary by region.
The lack of GRAS status suggests this compound may have limited or specialized use in food manufacturing, or manufacturers may be pursuing alternative regulatory pathways for its approval.
Key Studies
Public scientific literature on 3-methyl-5-propyl-2-cyclohexen-1-one is limited. Most information comes from flavor industry databases and regulatory filings rather than peer-reviewed toxicological studies. The flavor and fragrance industry typically generates safety data through in vitro and animal studies, though these reports are often proprietary.
Flav-o-Rich, the International Organization of the Flavor Industry (IOFI), and individual manufacturers maintain safety dossiers on approved flavoring compounds. For compounds not on GRAS lists, interested parties should consult directly with manufacturers or regulatory agencies for available safety documentation.
The absence of published adverse event data combined with zero FDA recalls provides reasonable assurance of safety at current usage levels, though this does not constitute formal safety approval equivalent to GRAS designation.