5’-O-(4,4’-dimethoxytrityl)-2’-O-(2-cyano-2,2-dimethylethanimine-N-oxymethyl)uridine
5’-O-(4,4’-dimethoxytrityl)-3’-O-[(N,N-diisopropylamino)(2-cyanoethyloxy)]phosphinyl-2’-O-(2-cyano-2,2-dimethylethanimine-N-oxymethyl)uridine
formaldehyd
2,2-dimethylmalononitrile
uridine