4-((Benzyloxy)carbonyl)benzoic acid is a selectively protected derivative of terephthalic acid, featuring a free carboxylic acid and a benzyl ester-protected carboxylic acid. This structure enables the targeted modification of the unprotected carboxylic group in organic synthesis while the benzyl ester remains stable. It serves as a key intermediate in the synthesis of pharmaceuticals, agrochemicals, polymers, and liquid crystals, allowing for stepwise functionalization. The benzyl group can be readily removed via hydrogenolysis under mild conditions to afford terephthalic acid derivatives or other bifunctional compounds.