What is 2,4,5-trihydroxybutyrophenone?
2,4,5-trihydroxybutyrophenone (CAS Number: 1421-63-2) is a synthetic phenolic antioxidant belonging to the butylated hydroxyphenol family. It consists of a butyrophenone core structure with three hydroxyl groups positioned at the 2, 4, and 5 locations on the aromatic ring. This chemical structure enables the compound to donate hydrogen atoms to free radicals, thereby interrupting oxidative chain reactions that degrade food quality.
Common Uses
As an antioxidant, 2,4,5-trihydroxybutyrophenone is utilized in food manufacturing to extend shelf life and maintain product stability. Its primary applications include:
- Prevention of rancidity in oils and fats
- Protection of processed foods containing lipids from oxidative degradation
- Stabilization of food colorants and flavorings sensitive to oxidation
- Extension of product freshness during storage and distribution
The compound is typically used in minimal concentrations, often in combination with other antioxidants to achieve synergistic effects while maintaining regulatory compliance.
Safety Assessment
The FDA has not designated 2,4,5-trihydroxybutyrophenone as a GRAS (Generally Recognized As Safe) substance for food use in the United States. However, the compound carries no recorded adverse events in FDA databases and has been associated with zero FDA recalls. This absence of adverse event reports and recalls suggests no known safety incidents have been documented through post-market surveillance.
Toxicological data for this specific compound remains limited in published scientific literature. Like other phenolic antioxidants, safety evaluations typically examine parameters including acute toxicity, genotoxicity, and reproductive/developmental effects. The lack of GRAS status indicates that either comprehensive safety dossiers have not been submitted to the FDA, or submitted data were deemed insufficient for approval under GRAS procedures.
Regulatory Status
In the United States, 2,4,5-trihydroxybutyrophenone is not approved for direct food additive use by the FDA and does not hold GRAS status. This means it cannot be legally added to food products intended for U.S. consumption without prior FDA authorization through the food additive petition process.
Regulatory status varies internationally. The European Food Safety Authority (EFSA) maintains separate approval lists, and availability in other markets depends on individual national food regulations. Manufacturers seeking to use this compound must verify compliance with applicable regulations in their target markets.
Key Studies
Published scientific research specifically evaluating 2,4,5-trihydroxybutyrophenone remains sparse in peer-reviewed literature. Most antioxidant safety data derives from broader studies of phenolic compounds and structurally similar butylated hydroxyphenols. Researchers have established that phenolic antioxidants' efficacy correlates with hydroxyl group positioning and number on the aromatic ring, which influences radical-scavenging capacity.
General antioxidant research demonstrates that phenolic compounds undergo metabolism in the liver and gastrointestinal tract. Bioavailability and clearance rates for this specific compound have not been extensively documented in human or animal studies available in major scientific databases.
The absence of FDA adverse event reports and recalls suggests either minimal market use, limited consumer exposure, or genuine safety under actual use conditions. However, the lack of GRAS approval indicates that comprehensive safety documentation supporting food use has not been established or submitted to regulatory authorities.