The molecule is an L-polyhomomethionine zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-tetrahomomethionine; major species at pH 7.3. It is a L-polyhomomethionine zwitterion and a tetrahomomethionine zwitterion. It is a tautomer of a L-tetrahomomethionine.
(2S)-2-azaniumyl-8-methylsulfanyloctanoate