Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of active ingredients requiring substituted aromatic structures. Its aldehyde and carboxylic acid functional groups allow for versatile chemical modifications, such as condensation reactions and coupling processes, making it valuable in constructing complex organic molecules. Commonly employed in the preparation of dyes, fragrances, and specialty polymers where specific substitution patterns are needed. Also utilized in research settings for designing novel compounds with targeted biological activity.