ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, vol.66, 2010 (SCI-Expanded)
In the title compound, C(12)H(10)N(2)O(3), the dihedral angle between the benzene ring and the furan ring is 16.12 (13)degrees. The conformation is stabilized by an intramolecular O-H...N hydrogen bond. Intermolecular N-H...O hydrogen bonds with the keto group as acceptor lead to strands along [001]. The molecule displays a trans configuration with respect to the C=N and N-N bonds.