What is 2-pentyl-1-buten-3-one?
2-pentyl-1-buten-3-one (CAS Number: 63759-55-7) is a synthetic ketone compound belonging to the class of organic flavoring chemicals. It is a clear liquid with a distinctive aroma profile that resembles fruity and slightly solvent-like notes. The compound consists of a butenone backbone with a pentyl (five-carbon) side chain, which contributes to its sensory characteristics used in flavor applications.
Common Uses
As a flavoring agent or adjuvant, 2-pentyl-1-buten-3-one is used in the formulation of artificial flavor compounds intended for food and beverage products. Its typical applications include:
- Fruit-flavored beverages and drink mixes
- Candy and confectionery products
- Baked goods and desserts
- Processed snack foods
- Flavor concentrates and compositions
The compound is used in very small quantities, typically in parts per million (ppm) ranges, as part of complex flavor blends rather than as a standalone ingredient. Its role is to contribute specific aromatic notes that enhance or modify the overall flavor profile of a product.
Safety Assessment
According to available FDA records, there have been zero adverse events reported and zero product recalls associated with 2-pentyl-1-buten-3-one. This absence of reported safety incidents suggests that at the levels used in food applications, the compound has not been associated with consumer harm.
The lack of FDA GRAS (Generally Recognized As Safe) status indicates that this compound has not undergone the formal GRAS notification process or does not meet the criteria for GRAS designation. GRAS status requires that a substance be "generally recognized, among experts qualified by scientific training and experience to evaluate its safety, as having been adequately shown through scientific procedures... to be safe under the conditions of its intended use."
For substances without GRAS status, manufacturers may still use them under FDA regulations if they operate as food additives with appropriate safety data or if the ingredient falls under other regulatory pathways. The specific regulatory status depends on the context of use and supporting safety documentation provided by manufacturers.
Regulatory Status
In the United States, 2-pentyl-1-buten-3-one is not listed as a GRAS substance, which means its use must be justified through other regulatory mechanisms. Manufacturers using this ingredient are responsible for ensuring compliance with FDA food additive regulations (21 CFR Part 570) and demonstrating adequate safety data.
Regulatory approval and permitted use levels vary internationally. In the European Union, flavoring compounds are regulated under Regulation (EC) No 1334/2008, and substances must be evaluated by the European Food Safety Authority (EFSA) or listed in the Union List of flavoring substances. Status in other major markets (Japan, Canada, Australia) may differ based on their respective regulatory frameworks.
Manufacturers intending to use this ingredient should verify current regulatory status in their specific markets of distribution, as regulations and approved substance lists are subject to updates.
Key Studies
Limited published scientific literature is readily available on 2-pentyl-1-buten-3-one specifically. The compound's safety profile in food applications appears to be based on its chemical class characteristics, structural similarity to other approved flavor compounds, and the absence of reported adverse events in consumer use.
As with many minor flavor components, comprehensive toxicological studies may not be publicly available, particularly for ingredients used in very small concentrations. Safety assessment for such compounds typically relies on:
- Structural and metabolic similarity to known safe compounds
- Historical use data and absence of adverse reports
- In vitro and animal toxicology data held by manufacturers
- Concentration levels in final food products (typically below threshold of toxicological concern)
For current safety information, manufacturers and regulatory agencies should be consulted for proprietary safety data packages that support the use of this ingredient.