- a white, crystalline, water-soluble, alcohol-soluble solid, C8H8O3, obtained by extraction from the vanilla bean or prepared synthetically: used chiefly as a flavoring agent and in perfumery.
- a white crystalline aldehyde found in vanilla and many natural balsams and resins; 3-methoxy-4-hydroxybenzaldehyde. It is a by-product of paper manufacture and is used as a flavouring and in perfumes and pharmaceuticals. Formula: (CH 3 O)(OH)C 6 H 3 CHO