CAS No 118362-03-1 , 5'-O-(4,4-Dimethoxytrityl)-2'-O-[(tert-butyl)dimethylsilyl]uridine-3'-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite5'-O-DMT-2'-TBDMS-rU-3'-CEDPA5'-O-(4,4-Dimethoxytrityl)-2'-O-[(tert-butyl)dimethylsilyl]uridine-3'-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite5'-O-DMT-2'-TBDMS-rU-3'-CEDPA