The molecule is a alpha-D-GalpA-(1->4)-D-GalpA in which the anomeric hydroxy group has alpha- configuration. It has a role as a bacterial xenobiotic metabolite. It is a conjugate acid of an alpha-D-GalpA-(1->4)-alpha-D-GalpA(2-).
(2S,3R,4S,5R,6S)-6-[(2S,3R,4R,5R,6S)-2-carboxy-4,5,6-trihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid