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, as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides are fatty acid esters of glycerol; they are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.
A carboxylate ester
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By Russell Hotten
February 26, 2021
BBC News
A benefits top-up designed to help the poor survive lockdown is due to end - unless it is extended at the Budget.
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