The molecule is a dicarboxylic acid dianion resulting from the deprotonation of both of the carboxy groups of N-(4-carboxy-4-oxobutanoyl)-L-ethylglycylglycine. The major species at pH 7.3. It is a conjugate base of a N-(4-carboxy-4-oxobutanoyl)-L-ethylglycylglycine.
5-[[(2S)-1-(carboxylatomethylamino)-1-oxobutan-2-yl]amino]-2,5-dioxopentanoate