Tetraamylammonium chloride is an organic compound comprising ammonium ions and chloride ions. It is commonly employed as a phase-transfer catalyst in organic synthesis, particularly in the production of pharmaceuticals and agricultural chemicals. Tetraamylammonium Chloride exhibits strong basicity, facilitating the transfer of reactants between immiscible solvents, thereby enabling more efficient chemical reactions. Additionally, it serves as an intermediate in the synthesis of other quaternary ammonium compounds.