3-Buten-2-one, 3-methyl-4-(2,4,6-trimethyl-3-cyclohexen-1-yl)- 3-Methyl-4-(2,4,6-trimethyl-3-cyclohexen-1-yl)-3-buten-2-one 67801-29-0 EINECS 267-149-3 Methyl iritone