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any of eight organic compounds having the same molecular formula, C5H11OH, but different structures. The term is commonly applied to mixtures of these compounds, which are used as solvents for resins and oily materials and in the manufacture of other chemicals, especially amyl acetate, a solvent for nitrocellulose lacquers. Commercial amyl alcohols are colourless liquids, slightly soluble in water, and having a characteristic penetrating odour.