1-Hexen-3-one, 5-methyl-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)- 5-Methyl-1-(2,6,6-trimethylcyclohex-2-en-1-yl)hex-1-en-3-one 6-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-2-methyl-5-hexen-4-one 70092-23-8 EINECS 274-309-6 Isobutyl ionone alpha-Methyl ethyl ionone