[(1-Carboxycyclohexyl)(carboxymethyl)-ammonio]acetate.

The title compound, C11H17NO6, was prepared by the reaction of 1-aminocyclohexanecarboxylic acid with monochloroacetic acid. In the molecule one of three carboxy groups is deprotonated while the N atom is protonated, thus the molecule exists as an inner salt in the crystal structure. The crystal packing is stabilized by intermolecular O—H⋯O hydrogen bonding; an intramolecular N—H⋯O hydrogen bond is also present. [ABSTRACT FROM AUTHOR]