1-Methyl-4-isopropylidene-1-cyclohexen-3-one 2-CYCLOHEXEN-1-ONE, 3-METHYL-6-(1-METHYLETHYLIDENE)- 3-Methyl-6-(1-methylethylidene)-2-cyclohexen-1-one 3-Methyl-6-(1-methylethylidene)cyclohex-2-en-1-one 3-Terpinolenone 491-09-8 EINECS 207-729-5 FEMA No. 3560 Piperitenone Pulespenone p-Menth-1,4(8)-dien-3-one p-Mentha-1,4(8)-dien-3-one