D-erythro-L-galacto-octose

EXAMPLE 3.4 The aldo-octose shown in Fig. 3-4 has an L-galactose-like configuration in the first five carbon atoms, and in the last three carbon atoms a configuration like the lower three of D-erythrose. Accordingly it is called D-erythro-L-galacto-octose. This is a rarely encountered monosaccharide and is only given here as an example of the use of the standard nomenclature for carbohydrates. 

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