N-(β-Carb­oxy­eth­yl)-α-isoleucine

The title compound, {2-[(2-carbamoyleth­yl)amino]-3-methyl­penta­noic acid}, C₉H₁₈N₂O₃, is of inter­est with respect to its biological activity. It was formed during an addition reaction between acryl­amide and the amino acid isoleucine. The crystal structure is a three-dimensional network built up by inter­molecular N—H...O and O—H...N hydrogen bonds.