Used as a coupling agent in hybrid organic-inorganic materials, enhancing adhesion between organic polymers and inorganic surfaces such as glass, metals, and fillers. Commonly applied in coatings, sealants, and adhesives to improve durability and moisture resistance. Also utilized in sol-gel processes to introduce organic functionality into silica-based networks, useful in specialty films and surface modifications. Its ester group allows further chemical modification, enabling use in tailored synthesis for functional materials.