Hyeong Choi, B. Han, Yong Suk Shim
Oct 2, 2010
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
In the title compound, C17H20N2O4, the 2,5-dimethoxyphenyl unit is almost planar, with an r.m.s. deviation of 0.015 Å. The dihedral angle between the 2,5-dimethoxyphenyl ring and the urea plane is 20.95 (8)°. The H atoms of the urea NH groups are positioned syn to each other. The molecular structure is stabilized by a short intramolecular N—H⋯O hydrogen bond. In the crystal, intermolecular N—H⋯O and O—H⋯O hydrogen bonds link the molecules into a three-dimensional network.