Used as a reactive intermediate in organic synthesis, particularly in the production of polymers and copolymers. Its ester and acid functional groups allow it to participate in cross-linking reactions, making it valuable in coatings, adhesives, and resin formulations. Also employed in the synthesis of specialty chemicals, including pharmaceuticals and agrochemicals, where controlled reactivity and solubility are required. Its structure supports modification for biodegradable polymers and functionalized materials in advanced material science applications.