Coniferyl aldehyde is an organic compound with the formula HO(CH3O)C6H3CH=CHCHO.It is a derivative of cinnamaldehyde, featuring 4-hydroxy and 3-methoxy substituents.[1][2] In sweetgum (Liquidambar styraciflua), coniferyl aldehyde is a precursor to sinapaldehyde via hydroxylation mediated by coniferyl aldehyde 5-hydroxylase.[2] It is found in Senra incana (Hibisceae).It is a low molecular weight phenol that is susceptible to extraction from cork stoppers into wine.
