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gulose

n. (context carbohydrate English) An aldohexose that is a 3-epimer of galactose

Wikipedia
Gulose

Gulose is an aldohexose sugar. It is a monosaccharide that is very rare in nature, but has been found in archaea, bacteria and eukaryotes. It also exists as a syrup with a sweet taste. It is soluble in water and slightly soluble in methanol. Both the D- and L-forms are not fermentable by yeast.

Gulose is a C-3 epimer of galactose.