The title compound, C10H16N4, crystalizes with two molecules (A and B) in the asymmetric unit in which the dihedral angles between the piperidine and pyrimidine rings are 47.5 (1) and 10.3 (1)°. The four C atoms of the pyrimidine ring in one of the molecules are disordered over two sets of sites with occupancy factors 0.508 (11):0.492 (11). In the crystal, the A molecules are linked to one another through N—H...N hydrogen bonds, generating R22(8) ring patterns and forming inversion dimers. These dimers are further connected on either side to a B molecule through pairs of N—H...N hydrogen bonds, resulting in a tetrameric unit.
