1,2-O-Isopropylidene-β-D-lyxo-furanose

In the title compound C 8 H 14 O 5 , the pentofuranose five-membered ring has a twisted conformation on two carbon atoms while the five-membered ring of the isopropylidene group has an envelope conformation on an oxygen atom. Hydroxy groups are involved an infinite network of O—H...O hydrogen bonds that leads to the formation of a layer parallel to the (001) plane. Only weak C—H...O contacts exist between neighboring layers.