The molecule is zwitterionic form of N(6)-acetyl-N(6)-hydroxy-L-lysine arising from transfer of a proton from the carboxy to the amino group; major species at pH 7.3 It is a tautomer of a N(6)-acetyl-N(6)-hydroxy-L-lysine.
(2S)-6-[acetyl(hydroxy)amino]-2-azaniumylhexanoate