4-Amino-6-(piperidin-1-yl)pyrimidine-5-carbo-nitrile.

In the title compound, C(10)H(13)N(5), the piperidine ring adopts a chair conformation with the exocyclic N-C bond in an axial orientation, and the dihedral angle between the mean planes of piperidine and pyrimidine rings is 49.57†(11)°. A short intra-molecular C-H⋯N contact generates an S(7) ring. In the crystal, N-H⋯N hydrogen bonds link the mol-ecules into (100) sheets and a weak aromatic π-π stacking inter-action is observed [centroid-centroid separation = 3.5559†(11)†à ] between inversion-related pyrimidine rings.