A review. Centrifugal countercurrent chromatog. (CCC) is a sepn. technique which does not require solid stationary phases and employs solvents alone. It has been successfully used for the purifn. of hundreds of natural products from all manner of sources, including plants, animals, marine organisms, fungi and microorganisms. The technique is very versatile and is able to operate with very polar and apolar samples on both an anal. and a preparative scale. [on SciFinder (R)]