Used primarily as an intermediate in organic synthesis, especially in the preparation of conjugated polymers for organic electronics. Its halogen substituents enable cross-coupling reactions such as Suzuki or Stille couplings, making it valuable in constructing complex thiophene-based frameworks. The dodecyl chain enhances solubility in organic solvents, which is advantageous in solution-processing techniques for fabricating organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). Due to the presence of both bromo and iodo groups, it offers selective reactivity, allowing stepwise functionalization in multi-step syntheses of advanced materials.