ester

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Related to ester linkage: esterify, glycerol, Ester bond

ester

 [es´ter]
a compound formed from an alcohol and an acid by removal of water.

es·ter

(es'tĕr),
An organic compound containing the grouping, -X(O)-O-R (X = carbon, sulfur, phosphorus, etc.; R = radical of an alcohol), formed by the elimination of H2O between the -OH of an acid group and the -OH of an alcohol group; usually written as in ethyl acetate (from acetic acid and ethyl alcohol), CH3CO-OC2H5 or CH3COOC2H5.

ester

/es·ter/ (es´ter) a compound formed from an alcohol and an acid by removal of water.

ester

[es′tər]
Etymology: Ger, Essigäther, acetic ether
a class of chemical compounds formed by the bonding of an alcohol and one or more organic acids, with the loss of a water molecule for each ester group formed. Fats are esters, produced by the bonding of fatty acids with the alcohol glycerol.

es·ter

(es'tĕr)
An organic compound containing the grouping, -X(O)-O-R (X = carbon, sulfur, phosphorus; R = radical of an alcohol), formed by the elimination of H2O between the -OH of an acid group and the -OH of an alcohol group.

ester

a compound formed from an alcohol and an acid.

es·ter

(es'tĕr)
An organic compound containing the grouping, -X(O)-O-R (X = carbon, sulfur, phosphorus; R = radical of an alcohol), formed by the elimination of H2O between the -OH of an acid group and the -OH of an alcohol group.

ester (es´tur),

n a compound formed from alcohol and an acid.
ester linkage,
n the bonding between fatty acids and glycerol that characterizes true fats.

ester

chemical combination of an alcohol and an acid. In domestic animals the most common linkage is glycerol with fatty acid to form glycerides.

Patient discussion about ester

Q. Does anyone know an over the counter alternative to Lovaza, omega-3 acid ethyl esters? too expensive at Dr

A. there are all sort of companies that sell Omega-3, i buy from a company named Alsepa, but there are dozens of companies. but don't be tempted to buy a very cheap one, because they can be less purified.

More discussions about ester
References in periodicals archive ?
Ester linkages of p-coumaric acid in bamboo and grass lignins.
These changes included: Firstly, an important diminution of the signal for ester carbonyl vibration in the 1720-1740 cm-1 region which accounts for loss of ester linkages from polymeric backbone of alkyd and secondly, emergence of new peaks for carbonyl vibration in 1560-1628 cm-1 range which may be associated with formation of various photo-oxidized species such as carboxylic acids, aldehydes and ketones.
As previously reported in FTIR spectra, the formation of additional crosslinking sites via ester linkage between the anhydride group in the aromatic carboxylic dianhydride and hydroxyl group of the neat PBA-a thus clearly contributed this [T.
In addition, the thermal decomposition studies in both nitrogen and air environments indicate that the decomposition starts from the rupture of ester linkage.
Based on the results of FTIR, ester linkages between wood and citric acid were confirmed, especially at high moulding temperatures.
When optimal formulations and clinical applications of these monomers have been developed, adhesive polymers with improved hydrolytic stability are anticipated, relative to those obtained from monomers containing ester linkages as exist within contemporary adhesion-promoting formulations (15) and in the polymerizable cyclodextrin methacrylates that have been described previously (16-20).
2, relating to those protons of the methylene between those two ester linkages in BIBEA unit.
It is suggested that alkali treatment hydrolyses the ester linkages between lignin and the cell wall polysaccharides mainly hemicellulose (Chesson, 1981), and carbohydrates more accessible to the action of rumen micro-organisms followed by significant improvements in organic matter digestibility (Wadhwa and Makkar, 1995).
Paro: The key synergies are in building the ester linkages and finding the raw materials that help us build those linkages for our customers.
has been granted a patent for a radiation-curable composition comprised of a urethane (meth)acrylate oligomer comprised of an alkyd backbone, the alkyd backbone being derived from a polyester, the polyester having pendant ester groups protruding off of a main polymer chain of ester linkages, the pendant ester groups being derived from a compound selected from the group consisting of coconut oil, palm Kernel oil, and hydrogenated varieties of unsaturated oils or fatty acids having an Iodine value below 100 centigrams Iodine I gram sample; a reactive diluent; and a photoinitiator wherein the composition, when cured, has a hydrolysis resistance of less than 30% loss in equilibrium modulus after 30 days exposure at 85[degrees]C and 85% relative humidity.
These compositions are based on 40-to 99-wt% polyester with a mixture of long-chain and short-chain ester units joined head-to-tail through ester linkages.
FTIR analysis was also conducted for EUDA TAG formulations cured at 60[degrees]C to determine if any amidolysis of the ester linkages had occurred.