4-甲基伞形酮

N-乙酰基-2-氯-2-脱氧神经氨酸甲酯4,7,8,9-四乙酸酯

Neu5Ac methyl ester

methyl (p-tolyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-2-thio-D-glycero-D-galacto-2-nonulopyranosyl)onate