2-Nonanone（Cat No.:R069103）is a methyl ketone with the molecular formula C9H18O, characterized by a nine-carbon straight chain with a carbonyl group at the second position. It is a colorless to pale yellow liquid with a fruity or floral odor, naturally found in some fruits, vegetables, and essential oils. 2-Nonanone is used as a flavoring agent, fragrance component, and solvent in industrial applications. It also appears in studies of insect pheromones and plant defense mechanisms. Its physicochemical properties make it valuable in aroma research, environmental monitoring, and synthetic organic chemistry.