2-(Iodomethyl)tetrahydro-2H-pyran is a versatile intermediate used primarily in organic synthesis. The iodomethyl functionality acts as an excellent leaving group in nucleophilic substitution reactions, enabling the formation of carbon-carbon and carbon-heteroatom bonds. It facilitates the introduction of the (tetrahydropyran-2-ylmethyl) group as a protected hydroxymethyl equivalent into various molecules. This compound is particularly valuable in the preparation of complex organic compounds, including pharmaceuticals, agrochemicals, and heterocyclic compounds crucial in drug discovery and material science. The tetrahydropyranyl protecting group enhances stability and solubility in organic solvents. Additionally, it serves as a precursor in the synthesis of pyran derivatives with applications in fragrances, flavors, and bioactive molecules.