The two aromatic rings in the title compound, C(10)H(8)ClN(3), open the angle at the planar N atom to 128.00 (12)°. The amino N atom of one mol-ecule forms a hydrogen bond to the 1-N atom of an adjacent pyrimidyl ring, generating a hydrogen-bonded dimer.
* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.