Abstract

The absolute stereochemistry of the title compound, C9H15NO7, was determined from the use of d-glucuronolactone as the starting material. The compound crystallizes as the zwitterion. The five-membered ring adopts an envelope conformation with the –CH2OH-substituted C atom forming the flap. An intramolecular N—H⋯O hydrogen-bond occurs. In the crystal, the compound exists as a three-dimensional O—H⋯O intermolecular hydrogen-bonded network with each mol­ecule acting as a donor and acceptor for four hydrogen bonds.

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