definition of ester
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Ester Definition and Examples Ester Definition. An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Esters are derived from carboxylic acids and (usually) an alcohol. While carboxylic acid has the -COOH group, the hydrogen is replaced by a hydrocarbon in an ester.
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- Estera is a world-leading global provider of fiduciary and administration services. Established for over 25 years, Estera (formally Appleby Fiduciary) provides corporate, trust, fund and accounting services to clients across the world.
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Synthetic oil In chemistry, an ester is a chemical compound derived from an acid (organic or inorganic) in which at least one –OH (hydroxyl) group is replaced by an –O–alkyl (alkoxy) group.[1] Usually, esters are derived from a carboxylic acid and an alcohol.
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Ester Definition and Examples Ester Definition: An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Examples: Ethyl acetate is an ester. The hydrogen on the carboxyl group of acetic acid is replaced with an ethyl group. Article. Chemistry.
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chemical Alar - a chemical sprayed on fruit trees to regulate their growth so the entire crop can be harvested at one time daminozide chemical, chemical substance - material produced by or used in a reaction involving changes in atoms or molecules
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Estelle If that was a pickup line, then I'm afraid I've heard far better.” —Estelle, in a conversation with Arkis. Estelle (エステル Esteru) is a playable character from TearRing Saga: Utna Heroes Saga. She is the daughter of Count Merlon of Verge and is Raffin 's stepsister.
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- tautomer. (to`tô) , təmər one of two or more structural isomers, isomer in, chemistry one of two or more compounds having the same molecular formula but different (structures arrangements of atoms in the). Molecule isomerism is the occurrence of such. compounds
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- noun. Chemistry A reaction of an alcohol with an acid to produce an ester and water. Example sentences. 1  The degrees of esterification were 92% and 28.5% while galacturonic acid contents were 82% and 65%, respectively, for the two pectins.oun. Chemistry A reaction of an alcohol with an acid to produce an ester and water. Example sentences. 1  The degrees of esterification were 92% and 28.5% while galacturonic acid contents were 82% and 65%, respectively, for the two pectins.
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Ester In chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one-OH (hydroxyl) group is replaced by an-O- alkyl (alkoxy) group.Usually, esters are derived from a carboxylic acid and an alcohol.n chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one-OH (hydroxyl) group is replaced by an-O- alkyl (alkoxy) group.
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Ester Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odor.rotecting a carboxylic acid is useful in peptide synthesis, to prevent self-reactions of the bifunctional amino acids. Methyl and ethyl esters are commonly available for many amino acids; the t-butyl ester tends to be more expensive.
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Ester Reagents are known that drive the dehydration of mixtures of alcohols and carboxylic acids. One example is the Steglich esterification, which is a method of forming esters under mild conditions. The method is popular in peptide synthesis, where the substrates are sensitive to harsh conditions like high heat. DCC (dicyclohexylcarbodiimide) is used to activate the carboxylic acid to further reaction.
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- Ester Gum is a glycerol ester of wood rosin, widely used as thickening agent and texture stabilizer in food and beverage.ster Gum is an ester of wood rosin. As a plant derived ingredients, Ester Gum is general recognized as Kosher classified as Parve.
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Ester In chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one-OH (hydroxyl) group is replaced by an-O- alkyl (alkoxy) group. Usually, esters are derived from a carboxylic acid and an alcohol.Glycerides, which are fatty acid esters of glycerol, are important esters in biology, being one of the main classes of lipids, and making up the bulk of animal fats and vegetable oils.sters are widespread in nature and are widely used in industry. In nature, fats are, in general, triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries.
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Ester Esters are widespread in nature. They occur both in plants and in animals. Small esters, in combination with other volatile compounds, produce the pleasant aroma of fruits. Many chemicals in combination are responsible for specific fruity fragrances; however, often a single compound plays the leading role.
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- Define skyr: sour curdled milk; a dessert prepared from sweet and sour cream with sugar sour curdled milk; a dessert prepared from sweet and sour cream with sugar… See the full definition
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Ester R and R′ denote any alkyl or aryl group. R can also be a hydrogen atom. In chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one –OH (hydroxyl) group is replaced by an –O–alkyl (alkoxy) group. Usually, esters are derived from a carboxylic acid and an alcohol.
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Esterification in alcohol: Esterification. Alcohols can combine with many kinds of acids to form esters. When no type of acid is specified, the word ester is assumed to mean a carboxylic ester, the ester of an alcohol and a carboxylic acid. The reaction, called Fischer esterification, is characterized by the combining of an alcohol and an acid (with acid catalysis) to yield an ester plus water.
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Definitions &Translations Princeton's WordNet(3.00 / 1 vote)Rate this definition: 1  taper(noun) a convex shape that narrows toward a point. 2  taper(noun) the property possessed by a shape that narrows toward a point (as a wedge or cone) 3  wick, taper(noun) a loosely woven cord (in a candle or oil lamp) that draws fuel by capillary action up into the flame.
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Dimer Dimer. Definition. noun, plural: dimers. A chemical compound composed of two identical or similar (not necessarily identical) subunits or monomers. verb. To come together (of two similar subunits) to form a chemical compound.
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Ester Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odor.
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lactate lactate - a salt or ester of lactic acid. 1  ester - formed by reaction between an acid and an alcohol with elimination of water. 2  salt - a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
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Difference Between Vitamin C and Ester C The fat soluble vitamin C ester is different from ester C. With the changing environment and food habits the availability of Vitamin C from the natural sources has reduced drastically. Vitamin C is not stored properly in the human body and hence the intake in the form of supplements is essential for optimal health.
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- Esterification (Preparation of Esters) The process of esterification involves the reaction of a carboxylic acid with an alcohol in the presence of an acid catalyst. Water is also a product in this reaction.orked Example 9-2 Complete the following reaction and name the carboxylic acid salt formed. Solution The “protons” of the acid are removed by the OH-of the base to produce water. The cation of the base, in this case K + , forms the salt of the carboxylic acid.
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Dimer (chemistry) In the context of polymers, dimer also refers to the degree of polymerization 2, regardless of the stoichiometry or condensation reactions. This is particularly applicable to disaccharides. For example, cellobiose is a dimer of glucose, even though the formation reaction produces water :
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Methyl Anthranilate An ester is the product of a reaction between an alcohol and an acid, usually an organic acid.3 Methyl anthranilate is derived from the reaction of methanol and anthranilic acid.Sulfuric acid is used as a catalyst during this reaction.n ester is the product of a reaction between an alcohol and an acid, usually an organic acid.3 Methyl anthranilate is derived from the reaction of methanol and anthranilic acid.
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Synthesis, Isolation and Purification of Esters in a Direct Esterification Reaction Chemistry Tutorial Key Concepts. 1  Esters have the general formula : O. 2  Esters (alkyl alkanoates) are prepared by reacting an alkanol with an alkanoic acid in the presence of an acid catalyst2: alkanol. 3  Fischer Esterification is the name given to the acid-catalysed reaction between an alkanoic acid (carboxylic acid) and an alkanol (alcohol) 3.