1-(2,6,6-Trimethyl-3-cyclohexen-1-yl)-2-buten-1-one

Delta-Damascone (1-(2,6,6-Trimethyl-3-cyclohexen-1-yl)-2-buten-1-one) is a synthetic aroma chemical belonging to the damascone family of terpenoid ketones, structurally related to the rose-derived damascenone compounds found in rose otto essential oil. It is prized in perfumery for its intensely powerful, diffusive rosy-fruity character with subtle woody and tobacco-like nuances, and is considered one of the most potent fragrance materials available, effective at extremely low concentrations (often below 0.1%). Formulators choose delta-Damascone to impart a rich, complex floral-fruity signature to fine fragrances, personal care products, and home care formulations, though its use is subject to IFRA guidelines due to potential skin sensitization at higher concentrations.