The molecule is an alpha-amino-acid cation obtained by deprotonation of the carboxy group and protonation of the amino groups of (2R,5S)-2,5-diaminohexanoic acid; major species at pH 7.3. It is a conjugate acid of a (2R,5S)-2,5-diaminohexanoic acid.
(2R,5S)-2,5-bis(azaniumyl)hexanoate