Synonyms: (3E)-4-[(1S)-2,5β,6,6-Tetramethyl-2-cyclohexen-1β-yl]-3-buten-2-one;(E)-4-(2,5β,6,6-Tetramethyl-2-cyclohexene-1β-yl)-3-butene-2-one;cis-(+)-α-Irone;(3E)-4-[(1S,5R)-5β,6,6-Trimethyl-2-methylenecyclohexan-1β-yl]-3-buten-2-one;(E)-4-[(1S)-2,2,3α-Trimethyl-6-methylenecyclohexane-1α-yl]-3-butene-2-one;(3E)-4-[(1R)-2,5α,6,6-Tetramethyl-2-cyclohexen-1α-yl]-3-buten-2-one;(E)-4-[(1R)-2,5α,6,6-Tetramethyl-2-cyclohexene-1α-yl]-3-butene-2-one