2-(4-Octylphenyl)-1-iodoethane

2-(4-Octylphenyl)-1-iodoethane (CAS No. 162358-07-8, molecular formula C16H25I, molecular weight 344.28 g/mol) is a versatile organic compound widely used as an intermediate in chemical synthesis. Its iodine atom acts as a reactive leaving group for nucleophilic substitution and cross-coupling reactions, such as Suzuki and Heck reactions, enabling the construction of more complex molecules. The long octyl chain provides hydrophobicity and solubility in organic solvents, making it valuable in materials science for modifying polymers, liquid crystals, and organic semiconductors, as well as in surface chemistry for forming self-assembled monolayers or functionalizing nanoparticles. It also serves as a building block in pharmaceutical research, allowing modulation of lipophilicity and membrane permeability in drug design.