Shang Zhenhua, Qi Shan, Tao Xiao, Zhang Guangbo
College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2011 Jun 1;67(Pt 6):o1335. doi: 10.1107/S160053681101628X. Epub 2011 May 7.
In the title compound, C(18)H(21)N(3)O(6), the dihedral angle between the two aromatic rings is 61.1 (1)°. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds. An intra-molecular O-H⋯O hydrogen bonds is also present.