3,3'-(1-Oxopropane-1,3-di-yl)bis-(1,3-thia-zolidine-2-thione) chloro-benzene hemisolvate.

The title compound, C9H12N2OS4·0.5C6H5Cl, which contains two 1,3-thia-zolidine-2-thione rings, is a by-product of the synthesis of 3-acryloyl-1,3-thia-zolidine-2-thione. The dihedral angle between these rings is 79.