lactone


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Related to lactone: Homoserine lactone

lac·tone

 (lăk′tōn′)
n.
A cyclic ester, or a compound containing a cyclic ester, formed by the intramolecular condensation of a hydroxy carboxylic acid.


lac·ton′ic (-tŏn′ĭk) adj.

lactone

(ˈlæktəʊn)
n
(Elements & Compounds) any of a class of organic compounds formed from hydroxy acids and containing the group -C(CO)OC-, where the carbon atoms are part of a ring
lactonic adj

lac•tone

(ˈlæk toʊn)

n.
any of a group of internal esters derived from hydroxy acids.
[1840–50; lact(ic acid) + -one]
lac•ton′ic (-ˈtɒn ɪk) adj.
References in periodicals archive ?
Chhabra et al., "Simultaneous quantitative profiling of N-acyl-l-homoserine lactone and 2alkyl-4(1H)-quinolone families of quorum-sensing signaling molecules using LC-MS/MS," Analytical and Bioanalytical Chemistry, vol.
In the IR spectrum of 2-(7-methyl-2-oxo-2H-chromen-4ylmethoxy)-benzoic acid methyl ester (2b) (R = 7-C[H.sub.3]), the lactone carbonyl stretching frequency was appeared at 1720 [cm.sup.-1], whereas the methyl ester carbonyl stretching frequency was observed at 1742 cm-.
Abstract.- Nepalese honey samples stored for 8 months showed pH in the range of 3.9-4.6, free acidity 48.5-53meq/kg, lactone 15.5-17.1meq/kg, total acidity 61-70meq/kg, electrical conductivity 0.24-0.64mS/cm, Proline content 148-241mg/kg, HMF content 53.4-122mg/kg, Diastase Number 1.02-13.25DN and Invertase Number 0.58-10.5IN.
stewartii uses 3oxohexanoyl acyl carrier protein and SAdenosylL Methionine (SAM) as substrates to make 3oxohexanoyl homoserine lactone (AHL) autoinducers.
In this study a fraction containing the lactone sesquiterpene onopordopicrin (ONP) from Arctium lappa was administered orally as either 25mg/kg daily or 50mg/kg daily 48, 24 and 1 hour before the induction of colitis in rats by the administration of 2,4,6 trinitrobenzene sulfonic acid (TNBS).
Eprinomectin, a semi synthetic compound, member of macrocyclic lactone of avermectin family intended for treatment of endo and ectoparasities.
The XP820[TM] is the first tag worldwide to contain abamectin, a macrocyclic lactone compound.
Xinfu also said that its lactone project, carried out by the ChongQing Subsidiary Company, has achieved large-scale production status.
But one could argue whether this should be done with the current 5-7% terpene lactone extract.
One possibility of preparing compound 2 is to start from 2-oxabicyclo[3.3.0]oct-6-en-3-one (Grieco lactone) 1 [10], which is a commercially readily available product, in enantiomerically pure form and in multigram scale [11-14].
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.