Used as a catalyst in organic synthesis, particularly in Friedel-Crafts acylations and alkylations, enabling the formation of carbon-carbon bonds in pharmaceutical and fine chemical production. Employed in the preparation of indium-containing semiconductors and thin films for electronic and optoelectronic devices. Serves as a precursor in the synthesis of other indium-based compounds used in conductive coatings and transparent electrodes. Also utilized in research for indium doping in materials science applications.