4,7,8,9-四-氧-乙酰基-N-神经氨酸甲酯

2-allyl-2'-(2',3',N4-triacetyl-cytidin-5')-yl-N,N'-diisopropylphosphoramidite

(2S,4S,5S,6R)-5-acetamido-2,4-dihydroxy-6-[(1R,2R)-1,2,3-trihydro xypropyl]tetrahydropyran-2-carboxylic acid

Acetic acid (2R,3R,4R,5R)-4-acetoxy-2-(4-acetylamino-2-oxo-2H-pyrimidin-1-yl)-5-phosphonooxymethyl-tetrahydro-furan-3-yl ester