The molecule is an oxo carboxylic acid anion that is the conjugate base of 5-(2'-carboxyethyl)-4,6-dihydroxypicolinic acid. It is a conjugate base of a 5-(2'-carboxyethyl)-4,6-dihydroxypicolinic acid.
6-carboxy-3-(2-carboxyethyl)-2-oxo-1H-pyridin-4-olate