Before you jump on the raspberry ketone bandwagon, there are a few things you should know about this over-priced, proclaimed weight-loss. A raspberry contains molecules that contribute to its distinct raspberry flavor. One of those, raspberry ketone, was singled out by food. Raspberry ketone is a natural phenolic compound that is the primary aroma compound of red raspberries. Contents. [hide]. 1 Occurrence; 2 Preparation; 3 Uses.