A dialkyl ketone that is octane in which the two methylene protons at position 3 have been replaced by an oxo group. ChEBI: 3-octanone is a dialkyl ketone that is octane in which the two methylene protons at position 3 have been replaced by an oxo group. It has a role as a human urinary metabolite, an insect attractant, a fungal metabolite, an antifeedant, a plant metabolite, a biomarker and a toxin. It derives from a hydride of an octane.