Acta Cryst. (2013). E69, o1856-o1857 [ doi:10.1107/S1600536813032170 ]
Abstract: The title compound, C5H9NO4·H2O, is an isomer of the -amino acid glutamic acid that crystallizes from water in its zwitterionic form as a monohydrate. It is not one of the 20 proteinogenic -amino acids that are used in living systems and differs from the natural amino acids in that it has an -methyl group rather than an -H atom. In the crystal, an O-HO hydrogen bond is present between the acid and water molecules while extensive N-HO and O-HO hydrogen bonds link the components into a three-dimensional array.
CCDC reference: 953406
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