What is 2-(4-methyl-2-hydroxyphenyl)propionic Acid-gamma-lactone?
2-(4-methyl-2-hydroxyphenyl)propionic Acid-gamma-lactone, identified by CAS Number 65817-24-5, is a synthetic organic compound belonging to the lactone family of flavoring substances. Lactones are cyclic esters formed from hydroxy acids and are commonly found in nature as well as produced synthetically for use in food flavoring. This particular compound features a methylated hydroxyphenyl group attached to a propionic acid chain that cyclizes to form the characteristic gamma-lactone ring structure.
Common Uses
As a flavoring agent and adjuvant, this compound is utilized in the food industry to enhance or modify the sensory profile of various food and beverage products. Lactone-based flavorings are valued for their ability to contribute subtle, complex flavor notes that can enhance the overall taste experience. The specific structure of this compound determines its particular flavor characteristics and potential applications in formulations where such flavor profiles are desired.
Common application areas for synthetic lactone flavorings include beverages, baked goods, confectionery, dairy products, and other processed foods where flavoring enhancement is desired. The compound would typically be used at very low concentrations, as is standard practice with synthetic flavoring agents.
Safety Assessment
According to FDA records, there have been zero reported adverse events associated with this additive, and no food recalls have been linked to its use. This absence of documented safety incidents suggests that when used as intended in food applications, the compound has not raised acute safety concerns in the U.S. market.
The compound is not currently listed on the FDA's GRAS (Generally Recognized as Safe) inventory, which means it has not received this formal designation. However, the absence of GRAS status does not necessarily indicate a safety concern; rather, it reflects that formal GRAS notification or affirmative determination has not been completed for this specific substance. Many flavor compounds operate under FDA regulations without formal GRAS designation.
As with all synthetic flavoring agents, this compound is used at extremely low concentrations in food products—typically measured in parts per million. The margin between flavoring use levels and any theoretical toxicological threshold is generally substantial for approved food flavorings.
Regulatory Status
The regulatory status of this flavoring agent varies by jurisdiction. In the United States, its use would need to comply with FDA regulations for food additives and flavorings. The compound's CAS registration indicates it is a recognized chemical entity within scientific and regulatory databases.
Flavor compounds in the United States are regulated under the Code of Federal Regulations (CFR) Title 21, which establishes requirements for safety and proper use. Manufacturers using this or any flavoring agent are required to ensure compliance with these regulations and to use the substance in accordance with established safe practices for synthetic flavoring agents.
Key Studies
Limited published scientific literature is readily available specifically addressing this particular lactone compound in isolation. The flavor and fragrance industry generally relies on the well-established safety profile of the lactone chemical class, structural analogues, and adherence to established use levels based on flavor chemistry principles.
Research on structurally related lactone compounds has generally supported their safe use in food applications at typical flavoring concentrations. The extensive history of lactone use in food flavoring, combined with the zero adverse event reports for this specific compound, suggests adequate safety margin for its intended use.
Additional safety data, toxicological studies, or further regulatory determinations may be available through direct inquiry with the FDA or through manufacturers' technical documentation.