12-crown-4 is a crown ether (1,4,7,10-tetraoxacyclododecane) that selectively complexes small alkali metal cations, especially lithium. It is supplied as a high-purity reagent for use as a phase-transfer catalyst, ionophore, and ligand in synthetic and analytical chemistry.
- High purity suitable for analytical and synthetic applications.
- Selective complexation of lithium and other small alkali metal cations.
- Facilitates phase-transfer catalysis between immiscible solvents.
- Useful as an ionophore in coordination chemistry and sensing studies.
- Available in small laboratory pack sizes for bench-scale work.