Alpha-Bromostyrene is primarily used as an intermediate in organic synthesis, especially in pharmaceutical and agrochemical manufacturing. Its reactive bromine atom allows for easy substitution in coupling reactions, making it valuable in the construction of complex molecules. It is commonly employed in the synthesis of styrene-based polymers with tailored properties, where the bromine functionality enables further chemical modification. Additionally, it serves as a building block in the preparation of fluorescent dyes and optical brighteners due to its aromatic structure and reactivity. Careful handling is required as it is both toxic and reactive, particularly under heat or light exposure.