Used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals and fine chemicals. Its fused ring structure with a sulfur-containing heterocycle makes it valuable for constructing polycyclic frameworks found in bioactive molecules. It is also employed in research related to materials chemistry, where extended aromatic systems are needed for electronic or photophysical applications. The ester functionality allows for further derivatization, enabling the introduction of various functional groups in synthetic pathways.