From butanone and acetaldehyde as raw materials, the product was prepared by condensation, reaction with Laurene, and ring-forming reaction. The product is a mixture of three isomers and is colorless to pale yellow oily liquid. The aroma is similar to natural ambergris, wood aroma, and amber aroma. It is extremely persistent. Used in Cologne, soap and detergents, etc., as well as in tobacco flavor formula.