2,5-Dihydroxyterephthalic acid is an aromatic dicarboxylic acid derivative featuring two hydroxyl groups and two carboxylic acid groups in a para-substituted configuration on a benzene ring. This unique structure provides multiple coordination and reaction sites, making it a versatile building block. Its primary application is in the field of advanced materials. It serves as a crucial organic ligand and monomer for constructing Metal-Organic Frameworks (MOFs) and Covalent Organic Frameworks (COFs). These porous materials have significant potential in gas storage, separation, catalysis, and sensing. Furthermore, due to its conjugated aromatic system and functional groups, it is investigated as a precursor for organic semiconductors, particularly in the development of organic light-emitting diodes (OLEDs) and other optoelectronic devices. The compound's ability to form extended networks through coordination bonds or covalent linkages underpins its utility in materials science. Research focuses on synthesizing novel frameworks with tailored porosity and electronic properties for next-generation technological applications.