The molecule is an alpha-amino-acid anion that is the conjugate base of 5-(L-alanin-3-yl)-2-hydroxy-cis,cis-muconate 6-semialdehyde, having anionic carboxy gropus and a cationic amino group; major species at pH 7.3. It is a conjugate base of a 5-(L-alanin-3-yl)-2-hydroxy-cis,cis-muconate 6-semialdehyde.
(E,2S,4Z)-2-azaniumyl-8-hydroxy-4-(oxidomethylidene)-7,8-dioxooct-5-enoate