sodium 2-[(carboxymethyl)amino]benzoate

Crystallise the acid from hot water (charcoal). It forms complexes with Cu2+, Zn2+, Cd2+, Co2+ and Ni2+ in aqueous dioxane. [Roileanu et al. Rev Roum Chim 12 105 1967, Aldrich library of 13C, 1H FTNMR Spectra, NMR 2 1181A, Beilstein 14 H 348, 14 I 544, 14 II 225, 14 III 938.]