The molecule is a tetracarboxylic acid anion obtained by deprotonation of the four carboxy groups of beta-citrylglutamic acid; major species at pH 7.3. It is a tetracarboxylic acid anion and a N-acyl-L-alpha-amino acid anion.
3-[[(1S)-1,3-dicarboxylatopropyl]carbamoyl]-3-hydroxypentanedioate