Sulcatone (6-methyl-5-hepten-2-one) is an unsaturated methylated ketone with the molecular formula C<sub>8</sub>H<sub>14</sub>O. It is a colorless, water-like liquid with a citrus-like, fruity odor.
Sulcatone is one of a number of mosquito attractants, especially for those species such as Aedes aegypti with the odor receptor gene Or4.