2-De-oxy-d-galactitol.

2-De-oxy-d-galactitol, C6H14O5, was prepared by reduction of 2-de-oxy-d-galactose with sodium borohydride (NaBH4) and crystallized from aqueous solution. Colorless block-shaped crystals suitable for single-crystal X-ray diffraction were obtained. The title compound crystallizes in the triclinic space group P1, with two crystallographically independent mol-ecules in the asymmetric unit. In the crystal, the mol-ecules are linked by O-H⋯O hydrogen bonds, forming a three-dimensional hydrogen-bonded network.