2,3-Dichloroquinoline is a specialty chemical used primarily as a synthetic intermediate in the pharmaceutical and agrochemical industries. It serves as a building block for constructing complex heterocyclic compounds, particularly in the development of potential drug candidates and crop protection agents. Due to the reactivity of its chlorine substituents, it undergoes nucleophilic aromatic substitution reactions, enabling modifications for enhanced biological activity. It is commonly employed in medicinal chemistry research to synthesize novel quinolone derivatives with antimicrobial, anti-inflammatory, or other therapeutic properties, though it is not a direct precursor for major antimalarial drugs like chloroquine. Additionally, it finds applications in academic and industrial laboratories for exploring new organic syntheses.