dannose
Dannose is not a widely recognized carbohydrate name in standard chemical nomenclature. It does not appear in major sugar databases or biochemistry references, and there is no Consensus definition for its structure, properties, or biosynthesis. Because of its absence from authoritative sources, the term is most likely a misspelling, a fictional label, or a provisional identifier used in a specific, non‑standard context.
In contexts such as fiction, speculative chemistry, or certain product or project names, dannose may be used
For real-world comparison, the closest established term is mannose, an aldohexose with the chemical formula C6H12O6.
If you encounter the term in literature or product literature, check the source for a precise definition