Benzo[b]furan-2-carboxylic acid finds its application primarily in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the production of various bioactive compounds, including potential drug candidates. Its structure is often utilized in the development of molecules with therapeutic properties, such as anti-inflammatory, antimicrobial, and anticancer agents. Additionally, it is employed in the synthesis of complex organic frameworks, contributing to advancements in medicinal chemistry and material science. Its versatility makes it a valuable building block in the creation of novel chemical entities for diverse industrial and research purposes.