... Neu5,7Ac2,5-N-acetyl-7-O-acetylneuraminic acid;Neu5,7,9Ac3,5-N-acetyl-7,9-di-O-acetylneuraminic acid;Neu5,8,9Ac3,5-N-acetyl-8,9-di-O-acetylneuraminic acid;Neu5,7(8)9Ac3,5-N-acetyl-7(8),9-di-O-acetylneuraminic ... consisted of 5-N-acetyl-8,9-di-O-acetylneuraminic acid (Neu5,8,9Ac3 )and5 -N-acetyl-7,8,9-tri-O-acetylneuraminic acid (Neu5,7,8,9Ac4),however, neither 5-N-acetyl-7,8-di-O-acetylneuraminic acid(Neu5,7,8Ac3) ... acid;Neu5,7(8)9Ac3,5-N-acetyl-7(8),9-di-O-acetylneuraminic acid;Neu5,7,8,9Ac4,5-N-acetyl-7,8,9-tri-O-acetylneuraminic acid;Neu2, 7an5 Ac, 5-N-acetyl-2,7-anhydro-neuraminic acid; Neu5Gc,5-N-glycolyl-neuraminic acid; OAE, sialate-O-acetylesterase;OAE-C,...