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Acta Cryst. (2003). E59, o1648-o1649 [ doi:10.1107/S1600536803021731 ]
Abstract: The title compound, C5H10N2O2, has twofold crystallographic symmetry. A set of four molecules packs around a 
center to form a 12-membered ring that is constructed from four O-H
N hydrogen bonds.
Online 7 October 2003
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