identification of the sialic acids of the novel species by thin-layer chromatography , high performance liquid chromatography and gas-liquid chromatography -- mass spectrometry revealed the presence of both n-acetylneuraminic acid and n-acetyl-9-o-acetyl-neuraminic acid in about equimolar amounts .
C0037025
sialic acids
C0067762
n-acetylneuraminic acid