Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of thiophene-based active ingredients. Its reactivity allows for the introduction of the 5-bromothiophene moiety into larger molecules, making it valuable in the production of organic semiconductors and conjugated polymers for electronic devices such as organic field-effect transistors (OFETs) and solar cells. Also employed in the preparation of dyes, fluorescent probes, and functional materials where bromine serves as a handle for further cross-coupling reactions like Suzuki or Stille couplings.