N2-Benzoyl-5’-O-(4,4-dimethoxytrity1)-2’-O-(tert-butyl dimethylsilyl) 6-chloroguanosine 3’-O-(2-Cyanoethyl N,N-diisopropylphosphoramidite) 1g
This N2-Benzoyl-5’-O-(4,4-dimethoxytrity1)-2’-O-(tert-butyl is guaranteed a dimethylsilyl) with the use of 6-chloroguanosine and directly supplied 3’-O-(2-Cyanoethyl to your lab by Gentaur's warehouse.