The maltose molecule - rotatable in 3 dimensions

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Maltose is a disaccharide - formula C12H22O11 - consisting of two glucose units (12 carbon atoms, and 2 ring-shaped structures, each containing an oxygen atom).

Each glucose unit is effectively the same way up, a reflection of the arrangement in starch - especially amylose. This can be seen when the carbon 6 and associated groups are highlighted. Show ... hide H bonds between these sections.

The two sugars are linked via a glycosidic bond - an α (alpha) 1-4 bond between opposite sides of the 2 glucose molecules.

This bond - effectively an oxygen bridge - is formed as a result of a condensation reaction.

Label / unlabel bonding carbon atom numbers.

Note that as in glucose, one of these ring-shaped sections is in equilibrium with a open-chain form in which Carbon 1 has a CHO aldehyde group which gives it reducing properties, so that it reacts with reagents such as Benedict's.




Possibly relevant
material available online
(from Amazon.com)

Possibly relevant
material available online
(from Amazon.co.uk)