The molecule is a doubly-charged nucleotide-sugar oxoanion arising from deprotonation of the carboxylic acid and phosphate functions of CMP-pseudaminic acid. It derives from a pseudaminate. It is a conjugate base of a CMP-pseudaminic acid.
(2R,4S,5S,6S)-5-acetamido-6-[(1S,2S)-1-acetamido-2-hydroxypropyl]-2-[[(2R,3S,4R,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-4-hydroxyoxane-2-carboxylate