2-(6-Bromohexyloxy)tetrahydro-2H-pyran is the tetrahydropyranyl (THP) protected form of 6-bromohexan-1-ol. It functions as a synthetic intermediate in organic synthesis, where the THP group protects the hydroxyl functionality during reactions at the primary bromide terminus. The bromide enables alkylation, nucleophilic substitutions, or other functionalizations, after which the THP group is selectively removed under mild acidic conditions to reveal the free alcohol. This reagent is essential for installing a 6-hydroxyhexyl chain in pharmaceuticals, natural products, and fine chemicals, offering orthogonality in multi-step syntheses requiring selective protection/deprotection.