Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of fluorinated organic compounds. Its ethynyl and chloro functional groups allow for coupling reactions, such as Sonogashira or Suzuki couplings, enabling the construction of complex aromatic systems. Frequently employed in medicinal chemistry for creating analogs with enhanced metabolic stability and binding affinity. Also utilized in the preparation of liquid crystals and functional materials due to its rigid aromatic backbone and halogen substitution pattern.