D 6619 (OTTO) Dicyclohexano-18-crown-6 98% Cas 16069-36-6 - used as an anion activator and complexing agent which solubilizes alkali metal ions in non-polar solvents. D 6619 (OTTO) Dicyclohexano-18-crown-6 98% Cas 16069-36-6 - used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuffs etc,.