1-(3,3-Dimethyl-4-cyclohexene-1-yl)-1-buten-3-one 3-Buten-2-one, 4-(5,5-dimethyl-3-cyclohexen-1-yl)- 4-(5,5-Dimethyl-3-cyclohexen-1-yl)-3-buten-2-one 67662-99-1 EINECS 266-844-9