MIP Technologies (subsidiary of Biotage) has developed RENSA® PY resin that consists of highly cross-linked polystyrene particles containing phenyl and pyridine moieties on the bead surface. It works very well for chromatographic separations and provides excellent separation in organic or aqueous mobile phases.
Read the proof of concept study where we fractionated color compounds in beetroot juice http://www.biotage.com/literature/search'q=an086&display_type=1
Read more about RENSA® bulk resins at http://www.biotage.com/product-page/rensa-bulk-resins
Read more about how MIP Technologies can assist in your every separation challenge at http://www.miptechnologies.com/