Nexera UC Prep stationary phases have been specifically engineered for SFC separations paying close attention to bonding coverage, density and all factors leading to high capacity phases which exhibit excellent selectivity and peak shape. Nexera UC Prep Naphthyl is based on the rigid structure of pi electron rich and the naphthalene molecule provides a basis for many diastereomeric separations. A naphthalene based SFC material, with high bonding density and intrinsic base deactivation due to a rigid structure that also enables the shape selectivity needed for many diastereomeric separations. It also exhibits strong ?-? interaction and charge transfer interactions and performs well for diastereomers separations and non-polar compounds. The unique properties of Nexera UC Prep Naphthyl place its selectivity between graphitized carbon and alkyl type stationary phases.