Used primarily as an intermediate in the synthesis of pharmaceuticals, particularly in the preparation of prodrugs and ester-based derivatives that improve drug delivery and bioavailability. Its diphenylmethyl ester structure enhances lipophilicity, facilitating membrane penetration and enabling targeted release upon enzymatic or chemical hydrolysis. Commonly employed in research settings for developing active pharmaceutical ingredients (APIs) where controlled ester cleavage is required. Also utilized in organic synthesis to protect carboxylic acid functionalities during multistep reactions, offering stability under various reaction conditions while allowing selective deprotection when needed.