1-(6-Methyl-3-phenyl-2-sulfanyl-idene-1,2,3,4-tetra-hydro-pyrimidin-5-yl)ethanone.

In the title compound, C(13)H(14)N(2)OS, four C atoms of the phenyl ring are disordered over two sets of sites in a 0.60 (3):0.40 (3) ratio.