Used as an intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the production of certain herbicides and fungicides. It serves as a building block in organic reactions due to the presence of both aldehyde and phenolic functional groups, enabling condensation and substitution reactions. Commonly employed in the development of crop protection agents where chlorinated aromatic compounds enhance stability and bioactivity. Also utilized in the preparation of dyes and specialty polymers requiring thermal and chemical resistance.