Furanose vs. Pyranose

Furanosenoun

(chemistry) any cyclic hemiacetal form of a monosaccharide having a five-membered ring (the tetrahydrofuran skeleton)

Furanose

A furanose is a collective term for carbohydrates that have a chemical structure that includes a five-membered ring system consisting of four carbon atoms and one oxygen atom. The name derives from its similarity to the oxygen heterocycle furan, but the furanose ring does not have double bonds.

Pyranosenoun

(chemistry) any cyclic hemiacetal form of a monosaccharide having a six-membered ring (based on tetrahydropyran)

Pyranosenoun

A compound whose molecule contains a saturated pyran ring, especially a sugar having this structure.

Pyranose

Pyranose is a collective term for saccharides that have a chemical structure that includes a six-membered ring consisting of five carbon atoms and one oxygen atom. There may be other carbons external to the ring.