Nonose
# Nonose

A nonose is a monosaccharide with nine carbons.

## Nonoses types

Depending on the position of the functional groups, a distinction is made between ketononoses and aldononoses.

Aldononoses have seven chiral centers, which allows the formation of 128 stereoisomers $(2^7),$ which differ in the position of the hydroxyl groups or the asymmetric carbon atom. Ketononoses have six chiral centers, which gives the possibility of 64 different possible stereoisomers.

## Nonoses families

* Neuraminic acid
* Sialic acid
* Legionaminic acid
* Pseudaminic acid
