The molecule is a hexaric acid derivative that is adipic acid substituted at position 2 by an oxo group and at positions 4 and 5 by hydroxy groups (the D-threo-stereoisomer). It is a conjugate acid of a 3-deoxy-D-threo-hex-2-ulosarate(2-).
(2S,3R)-2,3-dihydroxy-5-oxohexanedioic acid