Benzoyl group

In organic chemistry, benzoyl (, ) is the functional group with the formula−COC₆H₅ and structure−C(=O)−C₆H₅. It can be viewed as benzaldehyde missing one hydrogen. The benzoyl group has a mass of 105 amu.

The term "benzoyl" should not be confused with benzyl, which has the formula −CH₂−C₆H₅. The benzoyl group is given the symbol "Bz" whereas benzyl is commonly abbreviated "Bn".