Acta Cryst. (2007). E63, o3774 [ doi:10.1107/S1600536807039128 ]
Abstract: The title compound, C13H13ClO6S, contains two methoxycarbonyl groups in a cis arrangement, with a dihedral angle of 79.9 (1)° between the least-squares planes defined by the two methoxycarbonyl fragments. Weak van der Waals interactions between the molecules are effective in the molecular packing. This is the first X-ray structure reported for a tosylmaleate derivative which can be used as a pharmaceutical primary material.
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