The molecule is the carbohydrate acid derivative anion formed by loss of a proton from the carboxy group of N-acetyl-alpha-D-muramoyl-L-alanine; principal microspecies at pH 7.3. It is a conjugate base of a N-acetyl-alpha-D-muramoyl-L-alanine.
(2S)-2-[[(2R)-2-[(2S,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxypropanoyl]amino]propanoate