2-BUTANONE, 4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)- 31499-72-6 4-(2,2,6-Trimethyl-5-cyclohexen-1-yl)-2-butanone 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-2-butanone 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)butan-2-one 49749-39-5 AI3-32481 Dihydro-alpha-ionone EINECS 250-657-4 FEMA No. 3628