l-Talitol.

The title compound, C6H14O6, the sugar alcohol corresponding to l-talose, was crystallized from aqueous solution. Colourless block-shaped single crystals suitable for single-crystal X-ray diffraction analysis were obtained. The title compound crystallizes in the monoclinic space group P21, with one mol-ecule in the asymmetric unit. In the crystal, all six hy-droxy groups act as donors in O-H⋯O hydrogen bonds, forming a three-dimensional hydrogen-bonded network. The crystal structure of its enanti-omer, d-altritol (d-talitol), has been reported previously [Kopf et al. (1991 ▸). Carbohydr. Res. 217, 1-6].