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Mild hydrazinolysis of Pseudomonas fluorescens strain ATCC 49271 lipopolysaccharide (LPS) followed by strong alkaline degradation and purification by anion-exchange HPLC resulted in two phosphorylated oligosaccharides (1 and 2). On the basis of compositional analysis and 1 H, 13 C, and 31 P NMR spectroscopy, including 2D correlation spectroscopy (COSY), 2D rotating...
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