Synonyms: 4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-2-butanone;7,8-Dihydro-b-ionone;Dihydro-b-ionone;a,b-Dihydro-b-ionone;b-7,8-Dihydroionone;b-Ionone, dihydro-;4-(2,6,6-trimethylcyclohex-1-en-1-yl)butan-2-one;2-butanone, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-;4-(2,6,6-Trimethylcyclohex-1-en-1-yl)butan-2-one;