3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)- 3-Methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one 4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-3-methyl-3-buten-2-one 4-(2,6,6-Trimethyl-1-cyclohexenyl)-3-methyl-3-buten-2-one 79-89-0 EINECS 201-231-1 FEMA No. 2713 Isomethyl-beta-ionone Methyl-delta-ionone NSC 66433 delta-Iraldeine