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lactone |
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lactone /lac·tone/ (lak´tōn) a cyclic organic compound in which the chain is closed by ester formation between a carboxyl and a hydroxyl group in the same molecule.
lactone (lakˑ·tōn), n a compound with a high molecular mass that comprises an ester linked to a ring structure of carbon atoms. Significant members of this group are coumarin and its derivatives. It is found in expressed oils and some absolutes. It has been used as an anticoagulant, sedative, and antipyretic. Harmful effects include skin allergies and potential toxicity to the nervous system. lactone, n an organic anhydride formed from a hyroxyacid by the loss of water between an 2OH and a 2COOH group. lactone 1. an aromatic liquid from lactic acid. 2. a cyclic organic compound in which the chain is closed by ester formation between a carboxyl and a hydroxyl group in the same molecule. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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These low-color additive blends are non-lactone replacements for Irganox XP blends of phenolic and lactone stabilizers, which Ciba Specialty Chemicals will phase out of production this year. These complexes are chemisorbed oxygen groups in the form of carboxy, quinone, lactone and phenolic groups (ref. The term macrolide was originally applied to specific compounds produced by various Streptomyces species containing, as part of their structure, a macrocyclic lactone to which various deoxy sugars are attached. |
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