ketone

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ketone (kē´tōn), any of a class of organic compounds that contain the carbonyl group, C[symbol]O, and in which the carbonyl group is bonded only to carbon atoms. The general formula for a ketone is RCOR′, where R and R′ are alkyl or aryl groups. The simplest ketone, where R and R′ are methyl groups, is acetone; this is one of the most important ketones used in industry. Low-molecular-weight ketones are used chiefly as solvents. Ketones may be prepared by several methods, including the oxidation of secondary alcohols and the destructive distillation of certain salts of organic acids. Ketones are related to the aldehydes but are less active chemically.

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ke·tone / ˈkēˌtōn/ • n. Chem. an organic compound containing a carbonyl group =C=O bonded to two alkyl groups, made by oxidizing secondary alcohols. The simplest such compound is acetone. DERIVATIVES: ke·ton·ic / kēˈtänik/ adj.

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ketone Any one of a group of organic compounds that contain the carbonyl group (>C=O) linked to two hydrocarbon groups. The ketone group is a carbonyl group with two single bonds to other carbon atoms (–CO–). Examples are acetone (propanone), CH3COCH3, and methyl ethyl ketone (butanone), CH3COC2H5. See also ketone body.

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ketone (kee-tohn) n. any member of a group of organic compounds consisting of a carbonyl group (=CO) flanked by two alkyl groups. k. bodies (acetone bodies) the ketones acetoacetic acid, acetone, and β-hydroxybutyrate, produced during the metabolism of fats. See also ketosis.

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ketone An organic compound that contains a ketone group,〉C=O.

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ketone An organic compound that contains a ketone group,