Used in organic synthesis as a building block for conjugated polymers and metal-organic frameworks (MOFs), particularly in the development of furan-based functional materials. Its rigid, planar structure and carboxylic acid groups enable coordination with metal ions and integration into extended π-systems, making it suitable for applications in optoelectronics, sensors, and porous materials for gas storage or separation. Also investigated as a renewable platform chemical derived from biomass for sustainable material design.