4-Nitrophenyl α-l-rhamnopyranoside hemihydrate

In the title compound, C12H15NO7·0.5H2O, there are two independent molecules in the asymmetric unit, together with one water molecule. The pyranoside rings each have close to a 1 C 4 chair conformation and the nitro groups are almost coplanar with the benzene rings. The water molecule links the two independent molecules through O—H⋯O hydrogen bonds. All the hydroxyl groups are involved in hydrogen-bond interactions, giving rise to a three-dimensional network.