The molecule is an L-polyhomomethionine zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-pentahomomethionine; major species at pH 7.3. It is a L-polyhomomethionine zwitterion and a pentahomomethionine zwitterion. It is a tautomer of a L-pentahomomethionine.
(2S)-2-azaniumyl-9-methylsulfanylnonanoate