4-Acetoxy-2,5-dimethyl-3(2H)-furanone – High-Purity Furanone Acetate for Fruit and Caramel Flavors

4-Acetoxy-2,5-dimethyl-3(2H)-furanone, commonly referred to as Furanone Acetate or Caramel Acetate, is a high-quality aroma ingredient widely utilized in the flavor industry. With a CAS number of 4166-20-5 and FEMA number 3797, this compound offers a distinctive and complex olfactory profile characterized by rich, fresh, sweet fruity notes complemented by a pronounced buttery caramel character.

This product complies with GB29938-2020 and internal standard Q/DLK.014-2023, ensuring consistent purity and reliable performance across applications. It presents as a colorless to light yellow transparent liquid with a minimum content (by GC) of 97.0%, reflecting its high concentration and stability. The relative density at 25°C ranges from 1.159 to 1.167, while the refractive index at 20°C falls between 1.476 and 1.481.

The sensory profile of 4-Acetoxy-2,5-dimethyl-3(2H)-furanone makes it particularly well-suited for formulating a wide range of fruit-type flavors, including strawberry, raspberry, pineapple, and tropical fruit profiles. Additionally, its rich caramel-like character enhances sweet flavor systems such as butterscotch, toffee, and baked goods. The recommended usage level is between 15 and 30 μg/g, allowing for precise integration into finished flavor compositions without overwhelming the overall profile.

For optimal preservation, the product is supplied in sealed aluminum bottles of 1 kg or 5 kg, with nitrogen protection to prevent oxidation and maintain freshness. It is recommended to use the product promptly after opening or dilute it with suitable solvents such as propylene glycol to ensure stability. Storage should be in a cool, dry place under refrigeration, where the product maintains a shelf life of 12 months.

This aroma ingredient is designed for professional use in flavor manufacturing and is not intended for direct consumer application. It delivers reliable quality, consistent sensory performance, and excellent compatibility with various flavor systems, making it a trusted choice for flavorists seeking a high-purity furanone acetate derivative to create authentic fruit and caramel flavor profiles.