Abstract
Commercial D,L-kynurenine was resolved by high-speed countercurrent chromatography using a cross-axis coil planet centrifuge. The separation was performed with an aqueous-aqueous polymer phase system composed of 10% (w/w) polyethylene glycol 8000 and 5% (w/w) dibasic sodium phosphate containing 6% (w/w) bovine serum albumin as a chiral selector. The lower phosphate-rich mobile phase eluted the L-enantiomer first followed by the D-enantiomer. The peak resolution was 0.94 for 2.5 mg of the sample. The separation was completed within 3.5 h.
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