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Structures of alginate trisaccharides (AOSs). 1 is the major component (∼75%) (4-deoxy-α-l-erythro-hex-4-enopyranosyluronate)-(1,4)-(α-l-gulopyranosyluronate)-(1,4)-(l-gulopyranosyluronate); 2 is the minor component (∼25%) (4-deoxy-α-l-erythro-hex-4-enopyranosyluronate)-(1,4)-(β-d-mannopyranosyluronate)-(1,4)-(l-gulopyranosyluronate).
