Widely 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 ability to undergo selective substitution reactions at the chloro positions. Commonly employed in the manufacture of agrochemicals and herbicides, where it contributes to the structural framework that enhances biological activity. Also utilized in research and development of novel heterocyclic compounds for drug discovery programs. Its reactivity and stability make it suitable for coupling reactions in both solid-phase and solution-phase synthesis.