5-Ethyl-3-hydroxy-4-methylfuran-2(5H)-one

What it is. 5-Ethyl-3-hydroxy-4-methylfuran-2(5H)-one is a flavouring substance (FLAVIS 10.023, CAS 698-10-2) obtained by chemical synthesis, with a purity of 95% and chemical formula C7H10O3. It belongs to functional group 2b, sensory additives, flavouring compounds.

What it is for. It is generally used as a flavouring agent in feed for all animal species, intended to influence feed palatability and sensory acceptance. The additive must be incorporated into feed via a premix rather than added directly.

Points to watch. The label must state a recommended maximum content of active substance per kg of complete feed (12% moisture): 0.05 mg for marine animals, 0.05 mg for poultry and pigs, and 0.08 mg for other species or categories. If the premix dose would exceed these levels, the label must indicate the functional group, identification number, name of the active substance and the amount added. Storage conditions and thermal stability must be specified in the instructions for use, and operators must manage risks of inhalation, skin and eye contact.