Nexera UC Chiral CCS, 5 Micron, 4.6 x 250 mm The Nexera UC Chiral CCS (amylose tris [(S)-a-methylbenzylcarbamate]) permits the enantiomeric separation of 1-Indanol and other similar compounds without the addition of DEA (diethyl amine) as in traditional methods. Similar in selectivity to ChiralPakĀ® AS-H.