Phenyl 2,3,4-tri-O-benzyl-1-thio-α-d-mannopyran-oside monohydrate.

In the title compound, C(33)H(34)O(5)S·H(2)O, the mannopyran-oside ring adopts a chair conformation with the 2-α-thio-phenyl group occupying an axial position. One of the pendant benzyl groups is disordered over two sets of sites in a 0.5:0.5 ratio. In the crystal, the water mol-ecule makes two O-H⋯O hydrogen bonds to an adjacent sugar mol-ecule with the O atoms of the primary alcohol and ether groups acting as acceptors. At the same time, the OH group of the sugar makes a hydrogen bond to a water mol-ecule.