L-Fructose

L-Fructose (CAS 7776-48-9) is the rare L-enantiomer of fructose, also referred to as L-(+)-Fructose, Keto-L-fructose, and L-Arabino-hexulose. Unlike the naturally abundant D-fructose found in fruit, L-Fructose is a synthetic mirror-image isomer with distinct metabolic and sensory properties. It carries no assigned E-code.

In pharmaceutical research, L-Fructose serves as a reference standard and chiral building block where stereochemical precision is required. In food and nutrition applications, its structural similarity to D-fructose allows it to contribute sweetness and flavoring profiles while behaving differently in metabolic pathways, making it relevant to low-calorie and specialty formulation development.

L-Fructose is supplied as a clear colourless solution and is subject to REACH registration requirements for EU supply. Procurement teams should confirm grade specification against intended application, whether analytical, food-grade, or pharmaceutical research use, and verify documentation including SDS and certificate of analysis prior to ordering.