4,6-Dihydroxy-4,6-dimethyl-1,3-diazinane-2-thione

In the title compound, C6H12N2O2S, the heterocyclic ring has a sofa conformation. The molecular conformation is stabilized by an intramolecular O-H center dot center dot center dot O hydrogen-bond interaction with graph-set motif S(6). In the crystal, molecules are linked by O-H center dot center dot center dot S, N-H center dot center dot center dot S and N-H center dot center dot center dot O hydrogen-bond interactions, forming an extended two-dimensional framework parallel to the ac plane.