Choi Hyeong, Shim Yong Suk, Lee Sung Chun, Kang Sung Kwon, Sung Chang Keun
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):o2632. doi: 10.1107/S1600536811036464. Epub 2011 Sep 14.
In the title compound, C(16)H(18)N(2)O(3), the dihedral angle between the 4-meth-oxy-phenyl ring and the urea group is 35.6 (2) °. The H atoms of the urea NH groups are positioned syn to each other. In the crystal, inter-molecular N-H⋯O and O-H⋯O hydrogen bonds link the mol-ecules into a two-dimensional array in the ac plane; the carbonyl-O atom is trifurcated.