Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. It also serves in the preparation of functional materials such as organic semiconductors and fluorescent dyes due to its electron-deficient aromatic structure. Its reactivity allows for selective substitutions at the 2-chloro position, enabling the construction of complex quinoxaline derivatives with biological activity. Commonly employed in medicinal chemistry research for structure-activity relationship studies.