[(2R,3R)-2,3-dihydroxy-4-oxo-5-phosphonatooxypentyl] phosphate
[(2R,3R)-2,3-dihydroxy-4-oxo-5-phosphonatooxy-pentyl] phosphate
[(2R,3R)-2,3-dihydroxy-4-keto-5-phosphato-pentyl] phosphate