Used as a key building block in the synthesis of metal-organic frameworks (MOFs), particularly for constructing porous materials with tunable properties. Its multiple ether and carboxylic acid functional groups enable strong coordination with metal ions, enhancing structural stability. Commonly applied in gas storage, catalysis, and sensing due to the extended conjugation and solubility provided by the methoxyethoxy side chains. Also employed in designing functional porous materials for environmental applications such as CO₂ capture and pollutant removal.