4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one – High-Purity Fenugreek Lactone for Flavor Applications

4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, commonly known as Fenugreek Lactone or Sugar Lactone, is a high-quality aroma ingredient widely used in the flavor and fragrance industry. With a CAS number of 28664-35-9 and FEMA number 3634, this compound delivers a complex and distinctive olfactory profile characterized by strong fenugreek-like notes, complemented by nuances of lovage, cherry, and rich caramel.

This product meets the stringent quality requirements of GB29938-2020, ensuring consistent purity and performance. It appears as a light yellow transparent liquid with a content (by GC) of no less than 97.5%, reflecting its high concentration and stability. The relative density at 25°C ranges from 1.179 to 1.189, while the refractive index at 20°C falls between 1.490 and 1.500, with a melting point of 26 to 29°C.

Thanks to its warm, sweet, and slightly nutty aromatic profile, 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one is particularly suitable for creating authentic strawberry, coffee, berry, and other sweet-type flavor compositions. Its recommended usage level is between 0.5 and 1 μg/g, allowing for precise and subtle enhancement of flavor profiles without overpowering the final formulation.

For optimal preservation, the product is supplied in sealed aluminum bottles of 1 kg or 5 kg, with nitrogen protection to prevent oxidation. It is recommended to use the product promptly after opening or dilute it with suitable solvents such as propylene glycol to maintain stability. Storage should be in a cool, dry place under refrigeration, where the product maintains a shelf life of 12 months. Note that the material may solidify at low temperatures and should be fully melted before use or quality testing.

This aroma ingredient is designed for professional use in flavor manufacturing and is not intended for direct consumer application. It offers reliable quality, consistent sensory performance, and broad compatibility with various flavor systems, making it a trusted choice for flavorists seeking a high-purity fenugreek-type lactone.