Trimethoxyphenylsilane is widely used as a coupling agent in the production of composite materials, where it enhances the adhesion between organic polymers and inorganic surfaces. It is particularly valuable in the manufacturing of fiberglass and mineral-filled composites, improving mechanical properties and durability. In coatings and adhesives, it acts as a crosslinking agent, providing better water resistance and thermal stability. Additionally, it serves as a key intermediate in the synthesis of organosilicon compounds, which are utilized in various industrial applications, including electronics and pharmaceuticals, due to their unique chemical properties.