improvements in the isolation procedure and the analytical equipment enabled the detection of seven novel sialic acids in bovine submandibular gland glycoprotein : n-acetyl-8-o-acetylneuraminic acid , n-acetyl-8,9-di-o-acetylneuraminic acid , n-acetyl-7,8,9-tri-o-acetylneuraminic acid , n-glycoloyl-7-o-acetylneuraminic acid , n-glycoloyl-7,9-di-o-acetylneuraminic acid , n-glycoloyl-8,9-di-o-acetylneuraminic acid , and n-glycoloyl-7,8,9-tri-o-acetylneuraminic acid .
C0037025
sialic acids
C0067762
n