Lactone definition

lăktōn
Any of a group of organic cyclic esters formed by the elimination of a molecule of water from the OH and COOH groups of a molecule of a hydroxy acid.
noun
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A cyclic ester, or a compound containing a cyclic ester, formed by the intramolecular condensation of a hydroxy carboxylic acid.
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Any of various organic esters derived from organic acids by removal of water. Lactones are formed when the carboxyl (COOH) group of the acid reacts with a hydroxyl (OH) group in the same acid, releasing water and causing the carbon atom to join to the hydroxyl's remaining oxygen atom, forming a ring. Vitamin C, the antibiotic erythromycin, and many commercially important substances are lactones.
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(organic chemistry) A cyclic intramolecular ester derived from a hydroxy acid.
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Other Word Forms

Noun

Singular:
lactone
Plural:
lactones

Origin of lactone

  • lact(o)– –one

    From American Heritage Dictionary of the English Language, 5th Edition

Lactone Sentence Examples

  • It was then found that on reducing the lactone of the acid obtained from d-mannonic acid, ordinary glucose resulted.

  • On reducing the lactone prepared from the inactive acid an inactive galactose is obtained from which l-galactose may be separated by fermentation.

  • Sedanolic acid readily decomposes into water and its lactone sedanolid, C 12 H 18 0 2, the odorous constituent of celery oil.

  • Alternatively a macrocyclic lactone can be used to treat for scab and will also be part of the strategy to remove resistant worms.

  • Reaction (e) is a special case for hydroxyl lactones which results in cleavage across the lactone ring.

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Words near lactone in the Dictionary