Fructone, also known as apple ketal and applinal, is a synthetic aroma compound with a fruity, apple-like smell with pineapple, strawberry, and woody aspects reminding of sweet pine. Fructone, also known as apple ketal and applinal, is a synthetic aroma compound with a fruity, apple-like smell with pineapple, strawberry, and woody aspects reminding of sweet pine. Fructone is a ketal that is usually synthesized from ethyl acetoacetate and ethylene glycol in an acid catalyzed ketalization reaction. (1) LookChem,2008,,, Available From: http://www.look-chem.com/FRUCTONE/ (without -)