A pungent, solvent-like ketone with a sharp, slightly sweet-green top note reminiscent of acetone crossed with a faint fruity-fatty nuance. Flashes off quickly leaving little behind. Rarely used in modern fine fragrance — more of an industrial/flavor-adjacent chemical (also known as 3-heptanone).AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 478.
Colorless mobile liquid.
Insoluble in water, soluble in alcohol, miscible with oils.
Powerful, green-fatty, somewhat fruity odor.
Finds a little use in flavor compositions, mainly in Melon types, Banana, and in certain types of Apple or fruit complexes.
Finds a little use in perfume compositions, but its diffusive power is difficult to control, as it requires considerable fixation to achieve a pleasant rate of evaporation.
Normal concentration is about 0.1 to 2 ppm in the consumer product, but it may occasionally be as high as 200 ppm in candy.
1) from n-Hept-2-yne by hydration. 2) by Grignard type reaction. 3) via Acetoacetic ester synthesis.