Used in the synthesis of pharmaceutical intermediates, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to form stable heterocyclic structures. Commonly employed in cross-coupling reactions to introduce quinoxaline moieties into bioactive molecules. Also utilized in the preparation of fluorescent dyes and organic semiconductors because of its electron-deficient aromatic core. Its reactivity at the 2-chloro position allows for selective functionalization, making it valuable in multi-step organic synthesis.