The molecule is dianion of 1-deoxy-D-threo-hexo-2,5-diulose 6-phosphate arising from deprotonation of both of the phosphate OH groups. It is a conjugate base of a 1-deoxy-D-threo-hexo-2,5-diulose 6-phosphate.
[(3S,4S)-3,4-dihydroxy-2,5-dioxohexyl] phosphate