Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the preparation of active pharmaceutical ingredients (APIs) due to its reactive chlorine atoms, which allow further functionalization. Commonly employed in cross-coupling reactions to form C–C and C–N bonds, enabling the construction of complex heterocyclic systems found in bioactive molecules. Also utilized in agrochemical research for designing novel pesticides with improved efficacy and selectivity.