5-[(1R)-1,5-dimethyl-4-hexen-1-yl]-2-methyl-3-cyclohexene-1,1-diol is an intermediate in the synthesis of Xanthorrhizol (X742050), a natural sesquiterpenoid from the rhizome of Curcuma xanthorrhiza that induces apoptosis and growth arrest in HCT116 human colon cancer cells.