The molecule is a peptide cation obtained by deprotonation of the carboxy group and protonation of the three amino groups of N(6)-[(3R)-3-methyl-D-ornithyl]-L-lysine; major species at pH 7.3. It is a conjugate acid of a N(6)-[(3R)-3-methyl-D-ornithyl]-L-lysine.
(2S)-2-azaniumyl-6-[[(2R,3R)-2,5-bis(azaniumyl)-3-methylpentanoyl]amino]hexanoate