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The title compound, C 19 H 26 O 8 S, has been synthesized from 2,3:4,5-di- O -isopropyl­idene-β- d -fructopyran­ose. The absolute configuration of the fused ring is confirmed by anomalous dispersion effects in the diffraction measurement. The six-membered β-fructopyran­ose ring has a twist-boat conformation with the two five-membered rings  trans  to each other. In the crystal, inter­molecular non-classical C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network.

2,3:4,5-Di-O-isopropylidenefructos-1-ylp-toluenesulfonate