Used as a highly efficient arylating agent in organic synthesis, particularly for transferring the 4-bromophenyl group under mild conditions. Commonly employed in transition-metal-free arylation of heteroarenes, enolates, and other nucleophilic substrates. Its stability and reactivity make it valuable in pharmaceutical and agrochemical research for constructing biaryl motifs and functionalized aromatic compounds. Also utilized in photoinduced reactions where controlled aryl radical generation is required.