The molecule is dizwitterionic form of N(5)-(L-1-carboxyethyl)-L-ornithine having anionic carboxy groups and cationic amino groups; major species at pH 7.3. It is a tautomer of a N(5)-(L-1-carboxyethyl)-L-ornithine.
(2S)-2-azaniumyl-5-[[(1S)-1-carboxylatoethyl]azaniumyl]pentanoate