2,2,6,7-tetramethylbicyclo[4.3.0]nona-4,9(1)-dien-8-one

2,2,6,7-tetramethylbicyclo[4.3.0]nona-4,9(1)-dien-8-one (CAS Number: 97844-16-1) is a synthetic flavoring compound belonging to the class of bicyclic organic molecules. Its chemical structure consists of a nine-membered bicyclic ring system with a ketone functional group and four methyl substituents. The compound is classified as a flavoring agent or adjuvant, meaning it is used to enhance, modify, or contribute to the overall flavor profile of food and beverage products.

This synthetic flavoring compound is utilized in the food industry primarily in the formulation of:

- Flavored beverages and soft drinks

- Confectionery products

- Baked goods and desserts

- Dairy products

- Processed snacks

As with most synthetic flavoring agents, it typically appears in products at very low concentrations—often measured in parts per million (ppm)—sufficient to achieve the desired sensory effect without significantly affecting the product's nutritional profile or other characteristics.

According to FDA records, there have been zero reported adverse events and zero product recalls associated with 2,2,6,7-tetramethylbicyclo[4.3.0]nona-4,9(1)-dien-8-one. This absence of documented safety incidents in the U.S. market provides a baseline indicator of safety during commercial use.

It should be noted that this compound has not received FDA GRAS (Generally Recognized as Safe) status. GRAS status is a formal designation granted by the FDA to substances that have a long history of safe use in food or that have been demonstrated safe through scientific procedures. The absence of GRAS status does not necessarily indicate the substance is unsafe; rather, it may reflect that a formal petition for GRAS determination has not been submitted, evaluated, and approved by the FDA, or that the available safety data has not met the threshold for such classification.

Like other synthetic flavoring agents, the safety profile of this compound is based on its chemical identity, typical use levels in food, and the body's ability to metabolize and eliminate it.

In the United States, this compound is not listed among FDA-approved food additives with explicit GRAS status. However, its presence in marketed food products suggests it may be used under various regulatory pathways, including those applicable to flavoring substances.

The FDA regulates flavoring agents under 21 CFR Part 182 and related regulations. Manufacturers using synthetic flavoring compounds are responsible for ensuring the safety of their products and compliance with applicable regulations. The regulatory pathway for flavoring agents differs somewhat from other food additives, as the industry has historically maintained much of the responsibility for determining the safety of flavoring substances.

Status in other regions: Regulatory approaches to synthetic flavoring agents vary internationally. The European Union and other regulatory bodies maintain separate assessments and approval lists for food flavoring substances.

Published scientific literature specifically evaluating 2,2,6,7-tetramethylbicyclo[4.3.0]nona-4,9(1)-dien-8-one appears limited in publicly available databases. The lack of extensive published research is not unusual for synthetic flavoring agents, particularly those used at low concentrations and with long histories of safe commercial use.

For a comprehensive safety evaluation, relevant data would include:

- Acute toxicity studies

- Subchronic and chronic toxicity data

- Genotoxicity and mutagenicity assessments

- Metabolic fate and kinetics

- Sensitivity to specific populations

Additional safety data may exist in proprietary industry files, regulatory submissions, or confidential industry reports that are not publicly available.