5'-O-DMT-2'-TBDMS-Uridine;5'-DMTr-2'-TBDMS-uridine;2'-O-tertButyldimethylsilyl-5'-O-DMT-uridine;5'-DMT-2'-TBDMS-rU;1-((2R,3R,4R,5R)-5-((Bis(4-Methoxyphenyl)(phenyl)Methoxy)Methyl)-3-((tert-butyldiMethylsilyl)oxy)-4-hydroxytetrahydrofuran-2-yl)pyriMidine-2,4(1H,3H)-dione;5'-O-(4,4'-DiMethoxytrityl)-2'-O-t-butyldiMethylsilyluridine;2'-O-tert-ButyldiMethylsilyl-5'-O-(4,4'-diMethoxytrityl)uridine;1-((2R,3R,4R,5R)-5-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-3-((tert-butyldmethylsilyl)oxy)