5-Acetyl-4-(2-chloro-phen-yl)-6-methyl-3,4-dihydro-pyrimidin-2(1H)-one.

In the title mol-ecule, C(13)H(13)ClN(2)O(2), the heterocyclic ring adopts a flattened boat conformation with the plane through the four coplanar atoms making a dihedral angle of 89.16 (5)° with the benzene ring, which adopts an axial orientation. The carbonyl, acetyl and methyl groups each have an equatorial orientation. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds lead to a tape motif. The H atoms of the methyl group at position 6 are disordered over two positions of opposite orientation.