1-Bromo-9-(tert-butyldimethylsilyloxy)nonane

1-Bromo-9-(tert-butyldimethylsilyloxy)nonane is a linear, 9-carbon chain alkylating agent bearing a bromide leaving group at C1 and a tert-butyldimethylsilyl-protected hydroxyl moiety at C9. The silyl ether functionalization at the terminal position confers synthetic utility in protecting hydroxyl groups during multi-step organic synthesis. This compound serves as a key intermediate in the synthesis of brominated silyl-ether-containing pharmaceuticals, where its bromide enables chain extension or cross-coupling. Its structure directly corresponds to a deprotection byproduct in processes involving tert-butyldimethylsilyl-protected nonanol precursors. Analytically, it functions as an HPLC reference standard for quantifying silyl-ether impurities in drug substance batches.