An ethereal salt, or compound ether, consisting of an organic radical united with the residue of any oxygen acid, organic or inorganic; thus the natural fats are esters of glycerin and the fatty acids, oleic, etc.
An ester is a compound formed from an acid and an alcohol. In esters of carboxylic acids, the -COOH group and the -OH group lose a water and become a -COO- linkage: R-COOH + R'-OH = R-COO-R' + H2O where R and R' represent organic groups.
The substance arising by combination, with loss of water, of the carboxyl group of an organic acid with the hydroxyl group of an alcohol, with formation of an ester bond, -O-CO-. ~ See Also: Carboxyl group, Hydroxyl group, Thioester.
a classification of organic compounds occurring naturally as oils and fats, produced by replacing the hydrogen of an acid by an alkyl, aryl, radical. A compound of an organic acid bonded via an ester bond to an alcohol. Any of a large group of organic compounds formed when an acid and alcohol is mixed. CH COOCH (Methyl acetate) is the simplest ester. Biodiesel is often described as a Fatty Acid Methyl Ester (FAME).
Esters are usually encountered as sweet smelling organic compounds commonly produced by many plants and fruits. However, the most common esters found in nature are fats and vegetable oils, which are esters of glycerol and fatty acids.
In chemistry, an organic compound in which an oxygen is bonded to carbon atom(s). In practical terms relevant to our discussion of androgens, esters of drugs are more soluble in oil (important for many injectable drugs) and longer-acting because it appears that the body must remove the ester chain before the compound can act at androgen receptors.
Compounds formed by the reaction of an acid or an alcohol. The esters used in cosmetics are usually emollients and mostly designed to spread easily and penetrate into the contours of the skin more readily. They tend to resist rancidity better than natural oils and are designed to be used in place of these in products.
An organic compound comparable to an inorganic salt. Formed by the reaction of an inorganic acid with an alcohol. Many forms are used for lubrication including phosphate esters, diesters and polyol esters. Only phosphate esters are approved by turbine OEM's for control systems.
an ester is a compound formed from the reaction between and acid and an alcohol. In esters of carboxylic acids, the –COOH group of the acid and the –OH group of the alcohol lose water and become a –COO- linkage.
In chemistry, esters are organic compounds in which an organic group (symbolized by R' in this article) replaces a hydrogen atom (or more than one) in an oxygen acid. An oxygen acid is an acid whose molecule has an - group from which the hydrogen (H) can dissociate as an H+ ion.