Used in pharmaceutical research as an intermediate in the synthesis of bioactive quinoline derivatives. Shows potential in the development of antimicrobial and antitumor agents due to the quinoline core's affinity for biological targets. Also employed in coordination chemistry as a ligand for metal ions, aiding in the design of catalysts and functional materials. Its carboxylic acid group allows for easy derivatization, making it useful in building more complex molecules for drug discovery and material science.