4-(Trimethylsilyl)butan-1-ol is an organosilicon compound serving as a versatile building block and intermediate in organic synthesis. Its primary hydroxyl group allows for straightforward functionalization (e.g., esterification, etherification, or conversion to leaving groups), while the remote trimethylsilyl group provides hydrophobic character and silicon functionality. It is widely used in the synthesis of silane coupling agents, silicone polymers, and hybrid materials, contributing to improved flexibility, stability, and surface properties. Key applications include surface coatings, adhesives, sealants, and sealers, where it enhances water repellency, durability, and adhesion. The compound is also valuable in pharmaceutical intermediates and advanced materials research due to its unique bifunctional structure.