Nexera UC Chiral CC4, 5 Micron, 4.6 x 100 mm The Nexera UC Chiral CC4 is a modified cellulose coated on high purity, high performance spherical silica particles. The chemical modification includes the chemical bonding of 4-chloro-3 methylphenylcarbamate to cellulose. The use of cellulose modified with chlorinated phenyl groups provides a separation opportunity for many previously unresolved and poorly resolved chiral mixtures. The Nexera UC Chiral CC4 columns are similar in selectivity to ChiralPak® OZ-H.