Alpha-heptyl (heptanal/heptaldehyde or its methylanthranilate/cinnamaldehyde derivative — most commonly the C7 aldehyde) has a powerful fatty-aldehydic character with a fresh, oily-citrus top reminiscent of orange peel and green fruit. On dry-down it turns waxy and slightly herbaceous, with a characteristic penetrating aldehydic bite typical of medium-chain aliphatic aldehydes.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 637.
Pale yellow or yellow oily liquid.
Insoluble in water, soluble in alcohol and oils.
Very mild green-herbaceous and warm odor of considerable tenacity.
There is probably very little application of this ester in fragrances. It gives interesting effects in support of Elderflower absolute (“Tombacco”, etc.).
Heptyl formate is used sparingly in flavor compositions for imitation Apricot, Peach, Plum, Raspberry, Blackcurrant, Gooseberry, Rum, etc.
Produced by direct esterification of n-Heptanol with Formic acid in presence of a catalyst.