(E)-(1)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one 127-41-3 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (3E)- 3-Buten-2-one, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (E)- 30685-95-1 31798-11-5 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one ALPHA-IONONE Cyclocitrylideneacetone, alpha- EINECS 204-841-6 EINECS 250-293-6 FEMA No. 2594 Ionone, alpha- alpha-Ionone (natural)