The non-H atoms of the title compound, C(6)H(8)N(2), lie in a common plane (r.m.s. deviation = 0.034 Å). In the crystal, adjacent mol-ecules are linked by inter-molecular N-H⋯N hydrogen bonds into a zigzag chain running along the c axis.
* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.