Used as a protected alcohol intermediate in organic synthesis, particularly in the preparation of complex natural products and pharmaceuticals. The tert-butyldimethylsilyl (TBS) group provides stability under a variety of reaction conditions while the iodide allows for further functionalization via cross-coupling or nucleophilic substitution reactions. Commonly employed in multi-step syntheses where selective protection of alcohols is required, especially in steroid and terpene chemistry. Its lipophilic character also aids in improving substrate solubility in nonpolar reaction media.