Methyl α-l-sorboside monohydrate.

Methyl l-sorboside monohydrate, C(7)H(14)O(6)·H(2)O, was prepared from the rare sugar l-sorbose, C(6)H(12)O(6), and crystallized. It was confirmed that methyl l-sorboside formed α-pyran-ose with a (2) C (5) conformation and crystallized with one water molecule of crystallization. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, forming a three-dimensional network. The unit-cell volume of the title compound, methyl l-sorboside monohydrate, is 481.13†(2)†à (3) (Z = 2), which is about 108.16†à (3) (29.0%) greater than that of half the amount of the chemical α-l-sorbose [745.94†(2)†à (3) (Z = 4)].