The molecule is a dipeptide obtained by formal condensation of the carboxy group of L-ornithine with the amino group of D-aspartic acid. It is a constituent of bacterial peptidoglycan type A4beta. It derives from a L-ornithine and a D-aspartic acid.
(2R)-2-[[(2S)-2,5-diaminopentanoyl]amino]butanedioic acid