Ester exists formed by the reaction of the water to produce alcohols and organic or non organic compounds.
Functional groups are the groups of atoms in a compound ,such as hydroxyl group in a alcohol , that determines the chemical behaviour of compound.
For example, hydroxyl , alcohol (OH) , carboxylic (COOH), amino [tex]$(NH_2)[/tex], methyl [tex]$(CH_3)[/tex] etc.
These are use in IUPAC naming , Ester is also a type of functional group .
The formula we use for ester RC-O-O-R' , here R can be any substitute ,C is carbon and O represents Oxygen. Esters are used in perfumes , oils , flavours .It is a flavouring agent.
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