Is it possible for a sugar to have to anomeric carbons?

[lhenslee]

Is it possible for a sugar to have 2 anomeric carbons?
And if so, how does this affect the alpha (OH axial) and beta (OH equatorial) nomenclature?

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[hdu]

What sugars? A disccharide has two anomeric carbons, each for each of the component monosaccharides.

If you are talking about Carbon 2 as an anomeric carbon, it is possible. In fact, in all the ketoses, as fructose, when in cyclic structure, the anomeric carbon is the carbon 2. The conventions for alpha and Beta are the same as if the anomeric carbon was carbon 1.

Sucrose (table sugar) is formed by an alpha D-glucose and a B-D- fructose. The linkage between them is alpha1, Beta2- O-glycosidic, because it is between the anomeric carbon of glucose (C1) and the anomeric carbon of fructose (C2)

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[Phantastic]

Every CLOSE-CHAINED monosaccharide has an anomeric carbon. Linkages usually occur at the anomeric carbon, and therefore these linkages (analogous to peptide bonds) can be alpha or beta.

A single monosaccharide cannot perform an intramolecular ring forming reaction twice, so no single monomer of a sugar will have multiple anomeric carbons (at least, not anything from triose to heptose, which is all MCAT cares about).

To reall understand the anomeric carbon, familiarize yourself with the Benedict's (Reducing Sugar) test.