Benzoyl bromide is primarily used as a reagent in organic synthesis, particularly in the introduction of the benzoyl group into various compounds. It is commonly employed in the acylation reactions of alcohols, phenols, and amines to produce benzoyl derivatives, which are valuable intermediates in pharmaceuticals, agrochemicals, and dyes. Additionally, it serves as a key reactant in the preparation of benzoyl peroxide, a widely used initiator in polymerization processes. Its reactivity with nucleophiles also makes it useful in the synthesis of complex organic molecules, including natural products and fine chemicals. Proper handling is essential due to its corrosive and toxic nature.