ketone

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ketone

 [ke´tōn]
any compound containing the carbonyl group, C=O, and having hydrocarbon groups attached to the carbonyl carbon, i.e., the carbonyl group is within a chain of carbon atoms.
ketone bodies the substances acetone, acetoacetic acid, and β-hydroxybutyric acid; except for acetone (which may arise spontaneously from acetoacetic acid), they are normal metabolic products of lipid and pyruvate within the liver, and are oxidized by muscles. Excessive production leads to urinary excretion of these bodies, as in diabetes mellitus; see also ketosis. Called also acetone bodies.

ke·tone

(kē'tōn),
Any organic compound in which two carbon atoms are linked by the carbon of a carbonyl group (C-O). The simplest ketone and the most important in medicine is dimethyl ketone (acetone).

ketone

/ke·tone/ (ke´tōn) any of a class of organic compounds containing the carbonyl group, CdbondO, whose carbon atom is joined to two other carbon atoms, i.e., with the carbonyl group occurring within the carbon chain.
Ketone.

ketone

(kē′tōn′)
n.
1. Any of a class of organic compounds, such as acetone, characterized by having a carbonyl group in which the carbon atom is bonded to two other hydrocarbon groups and having the general formula R(CO)R′, where R may be the same as R′.

ke·ton′ic (-tŏn′ĭk) adj.

ketone

[kē′tōn]
Etymology: Fr, acetone
an organic chemical compound characterized by having in its structure a carbonyl, or keto, group, ═CO, attached to two alkyl groups. It is produced by oxidation of secondary alcohols.

ke·tone

(kē'tōn)
A substance with the carbonyl group linking two carbon atoms; the most important in medicine and the simplest in chemistry is dimethyl ketone (acetone).
Ketoneclick for a larger image
Fig. 199 Ketone . The molecular structure of acetone.

ketone

an organic molecule in which a C=O group is contained within the molecule rather than at one end. Ketones are highly varied in structure, ranging from the simple acetone (see Fig. 199) to FRUCTOSE, a KETOSE sugar.

ketone,

n compound that contains a carbonyl group attached to a carbon in a chain. Used as analgesics, antiinflammatories, expectorants, and stimulants.
Enlarge picture
Ketones.

ke·tone

(kē'tōn)
A substance with the carbonyl group linking two carbon atoms; acetone is the most important in medicine and the simplest in chemistry.

ketone

(kē´tōn),
n an organic chemical compound characterized by having in its structure a carbonyl or keto group attached to two alkyl groups. It is produced by oxidation of secondary alcohols.
ketone body,

ketone

any compound containing the carbonyl group, CO, and having hydrocarbon groups attached to the carbonyl carbon, i.e. the carbonyl group is within a chain of carbon atoms.

ketone bodies
the substances acetone, acetoacetic acid and β-hydroxybutyric acid; except for acetone (which may arise spontaneously from acetoacetic acid), they are normal metabolic products usually derived from excess acetyl CoA from fatty acids within the liver, and are oxidized by the extrahepatic tissues; excessive production leads to urinary excretion of these bodies, as in diabetes mellitus. Called also acetone bodies. See also ketosis, acetonemia, pregnancy toxemia.
ketone pulegone