The molecule is an enolate anion resulting from the deprotonation of the hydroxy group of 6-chloro-3-hydroxypyridine-2,5-dione. The major species at pH 7.3. It is a conjugate base of a 6-chloro-3-hydroxypyridine-2,5-dione.
2-chloro-5,6-dioxopyridin-3-olate