3-Bromostyrene is widely used as a building block in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its vinyl group and bromine substituent make it a versatile intermediate for cross-coupling reactions, such as Suzuki or Heck reactions, enabling the creation of complex aromatic compounds. It is also employed in the development of liquid crystals and polymers, where its aromatic structure contributes to desired material properties. Additionally, 3-Bromostyrene is utilized in research for synthesizing fluorescent dyes and other functionalized organic molecules. Its reactivity and structural features make it valuable in both industrial and academic settings.