title: Determination of 3-deoxy-D-manno-octulosonic acid (KDO), N-acetylneuraminic acid, and their derivatives by ion-exchange liquid chromatography.
abstract: A liquid chromatography (1.6 MPa) system for the analysis of 3-deoxy-D-manno-2-octulosonic acid (KDO), N-acetylneuraminic acid (Neu5Ac), methyl alpha- and beta-glycosides of Neu5Ac and KDO, alpha-heptosyl-(1----5)-KDO, various sialyllactoses, alpha-KDO-(2----4)-KDO, alpha-KDO-(2----4)-KDO methyl alpha-glycoside, beta-KDO-(2----4)-KDO methyl beta-glycoside, D-glucuronic acid, D-glucurono-3,6-lactone, and D-galacturonic acid has been developed. Separation was achieved within 10 and 30 min by the use of a small column filled with a strongly basic, anion-exchange resin, Aminex A-29, and 0.75 or 10mM sodium sulfate solutions as mobile phases. This method allowed the determination of KDO and sialic acids in amounts of 100 ng (0.5 nmol) and 200 pg (0.6 pmol), respectively.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002852:Chromatography, Ion Exchange / Q000379:methods; D019158:N-Acetylneuraminic Acid; D009438:Neuraminic Acids / Q000032:analysis; D009844:Oligosaccharides; D012794:Sialic Acids / Q000032:analysis*; D013329:Structure-Activity Relationship; D013400:Sugar Acids / Q000032:analysis*
chemical_list: D009438:Neuraminic Acids; D009844:Oligosaccharides; D012794:Sialic Acids; D013400:Sugar Acids; C002532:2-keto-3-deoxyoctonate; D019158:N-Acetylneuraminic Acid