Chemical sugar

• Sugar found in adenosine triphosphate
• Monosaccharide in guanosine
• Biochemical sugar
• Sugar that's a component of RNA
• RNA sugar

Wiktionary Word definitions in Wiktionary
n. (context carbohydrate English) A naturally occurring pentose sugar, which is a component of the nucleosides and nucleotides that comprise the nucleic acid biopolymer, RNA. It is also found in riboflavin.

WordNet Word definitions in WordNet
n. a pentose sugar important as a component of ribonucleic acid

Wikipedia Word definitions in Wikipedia
Ribose is a carbohydrate with the formula CHO; specifically, it is a pentose monosaccharide (simple sugar ) with linear form H−(C=O)−(CHOH)−H, which has all the hydroxyl groups on the same side in the Fischer projection . The term may refer to either of ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1892, from German Ribose (1891), from Ribonsäure , a tetrahydroxy acid, with first element shortened and arbitrarily rearranged from English arabinose (c.1880), a sugar which is so called because it is formed from gum arabic .