Used primarily as an intermediate in organic synthesis, especially in the development of pharmaceuticals and agrochemicals. Its structure supports the construction of nitrogen-containing heterocyclic compounds, which are common in bioactive molecules. It is also employed in research settings for the preparation of fused cinnoline derivatives with potential medicinal properties, including anti-inflammatory and antimicrobial activities. Additionally, it serves as a building block in the synthesis of functional materials and specialty chemicals requiring rigid aromatic frameworks.