Described is the compound 6-hydroxy-2,6-dimethylheptanal and methods for preparing foodstuffs, flavoring compositions for foodstuffs, tobacco compositions, flavoring compositions for tobacco, perfume compositions, ingredients for perfume compositions, perfumed articles and ingredients for perfumed articles by including said 6-hydroxy-2,6-dimethylheptanal therein in order to produce:(a) In food flavorings, sweet, green, melon-like, tropical fruit-like, seedy and raspberry aromas and/or tastes;(b) In perfumes, sweet, green, melony, floral and muguet-like aromas; and(c) In tobaccos, sweet, fruity-melon-like, peach-like, and floral aromas prior to and on smoking in the main stream and in the sidestream in smoking tobaccos and the same aroma and taste nuances in the filter.Processes for synthesizing the 6-hydroxy-2,6-dimethylheptanal by hydrolysis of 2,6-dimethyl-5-heptenal are also described.