Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the preparation of active pharmaceutical ingredients (APIs) targeting tyrosine kinase and other enzyme-related pathways. Its structure allows for selective substitution reactions, making it valuable in medicinal chemistry for optimizing drug potency and selectivity. Also employed in the creation of agrochemicals and functional materials due to its stable heterocyclic core and reactive halogen sites.