An<unk>  group (IUPAC name: alkanoyl) is a functional group derived by the removal of one or more hydroxyl group from an oxoacid.. In organic chemistry, the<unk>  group is usually derived from a carboxylic acid of the form RC O OH. It therefore has the formula RC(=O)-, with a double bond between the carbon and oxygen atoms (i.e. a carbonyl group), and a single bond between R and the carbon.<unk>  groups can also be derived from other types of acids such as sulfonic acids, phosphonic acids, and some others.<unk>  halides can be used in Friedel-Crafts<unk> ation to introduce the<unk>  moiety in an aromatic compound.
In biochemistry,<unk> -CoA is a derivate of fatty acid metabolism.
Acyl
Oxamyl
Carbonyl
Acetyl
Carbide
Bromide
Lime 
Bite