Enantioseparation of amino acids on a polysaccharide-based chiral stationary phase.
Sulfonic acids have been shown to be more effective than the commonly used trifluoroacetic acid (TFA) in the chiral resolution of underivatized aromatic amino acids on an amylosic column. Sulfonic acid additives give a more UV transparent mobile phase, possibly allowing the detection of non-aromatic analytes. Work presented demonstrates that through the combination of sulfonic acid mobile phase additives, amine mobile phase additives and solvent modifier variations, the enantiomers of 20 of 25 probe amino acids are fully resolved, four are partially resolved with only one failing to be separated on a common amylosic column.
Ye
Yun K
YK
DuPont Pharmaceutical Company, Chemical Process Research and Development, Chambers Works, Deepwater, NJ 08023-0999, USA. yun.k.ye@dupontpharma.com
Lord
Barbara S
BS
Yin
Li
L
Stringham
Rodger W
RW
D000596:Amino Acids / Q000737:chemistry / Q000302:isolation & purification*; D011134:Polysaccharides / Q000737:chemistry*; D013237:Stereoisomerism
D000596:Amino Acids; D011134:Polysaccharides