the two sialic acids were separated on paper chromatograms , eluted , and assays for total and ester acyl groups showed the suspected n-acetyl derivative to contain 0.11 o-acyl and 1.16 n-acetyl groups per mole sialic acid and the diacetyl derivative to have 1.10 o-acyl and 0.93 n-acetyl groups per mole .
C0037025
sialic acids
C0067762
sialic acid