O5'-acetyl-O2'-(toluene-4-sulfonyl)-uridine

2',3',5'-三乙酰尿苷

(((((((2R,3S,4S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methoxy)(hydroxy)phosphoryl)oxy)(hydroxy)phosphoryl)methyl)phosphonic acid

ara-UpUpU

uridylyl-(5'->3')-uridine