Monosaccharides also occur in a furanose form. Furanose forms can be more difficult to work with because the ring is analogous to cyclopentane—i.e. they have a greater number of conformations that must be taken into account than the pyranose type. If a furanose pictured below has more than one name, then the less-used name is written below in smaller print.
|The furanose and pyranose forms of D-glucose|
The furanose form of D-glucose has not been isolated