Stephen Norris

This information is supplementary to the article “Non-aqueous Ion-Exchange Chromatography Using High Acid‑base Concentration: A Strategy for Purifying Non-crystalline Pharmaceutical Intermediates” that was published in the March 2022 issue of LCGC Asia Pacific.

Ion-exchange chromatography (IEX) is a frequently overlooked technique. This novel IEX method uses non-aqueous mobile phases to purify a non-crystalline intermediate after a reductive amination with D-xylose. IEX delivers a step change in strength and purity of the intermediate allowing successful downstream processing.

This information is supplementary to the article “Non-aqueous Ion-Exchange Chromatography Using High Acid‑base Concentration: A Strategy for Purifying Non-crystalline Pharmaceutical Intermediates” that was published in the March 2021 issue of LCGC Europe.