Used as a key intermediate in organic synthesis, particularly in pharmaceuticals and agrochemicals. Its aldehyde and bromomethyl functional groups allow for dual reactivity, enabling attachment to various molecular frameworks. Commonly employed in the preparation of benzylated compounds, heterocycles, and fluorescent dyes. Also utilized in the synthesis of polymer crosslinking agents and in medicinal chemistry for building active pharmaceutical ingredients (APIs) where a phenyl spacer with reactive handles is needed.