Iso-butyl acrolein (2-methyl-2-pentenal) is a sharp, pungent unsaturated aldehyde with a strong green, fatty, almost solvent-like character. In extreme dilution it can lend a fresh green-leafy nuance, but neat it is aggressive and eye-watering with a rough aldehydic bite.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 168.
Colorless to pale straw colored oily liquid.
Insoluble in water, soluble in alcohol and oils.
Penetrating oily-green, vegetable-and-foliage type odor, in high dilution reminiscent of the odor of raw beans, green beans, etc., also of the odor of raw potatoes.
Has been suggested for use in perfume compositions as a modifier for other 'green odor' chemicals.
It could find more use in flavor compositions for the increasingly interesting field of food flavoring and reconstitution of flavor in processed food.
Produced from (several methods) e.g. by condensation of Acetaldehyde with iso-Butyric aldehyde.