Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and bioactive compounds. Its bromine functionality allows for cross-coupling reactions, such as Suzuki or Heck reactions, enabling the construction of complex heterocyclic systems. Commonly employed in the development of medicinal agents where isoindole derivatives exhibit antimicrobial, anti-inflammatory, or anticancer activities. Also utilized in materials science for synthesizing functional dyes and optoelectronic materials due to its aromatic and electron-deficient structure.