Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the production of fungicides and herbicides. It serves as a building block in organic synthesis due to the presence of reactive functional groups—aldehyde and phenolic hydroxyl—enabling condensation and substitution reactions. Commonly employed in the preparation of Schiff bases, which exhibit biological activity and are studied for antimicrobial and antifungal properties. Also utilized in the development of dyes and photostable UV absorbers for coatings and polymers. Its chlorinated aromatic structure enhances stability and reactivity in electrophilic aromatic substitution processes.