4-Chloro-1H-pyrrolo­[2,3-d]pyrimidine

The title compound, C₆H₄ClN₃, is essentially planar with the pyrrole and pyrimidine rings inclined to one another by 0.79 (15)°. In the crystal, mol­ecules are connected via pairs of N—H...N hydrogen bonds, forming inversion dimers. These dimers are linked via C—H...N inter­actions, forming a two-dimensional network parallel to (10-1).