The molecule is a 6-acetamido-3-aminohexanoic acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of (3S)-6-acetamido-3-aminohexanoic acid; major species at pH 7.3. It is a tautomer of a (S)-6-acetamido-3-aminohexanoic acid.
(3S)-6-acetamido-3-azaniumylhexanoate