2-N-(4,4'-dimethoxytrityl)-2',3'-O-methoxymethyleneguanosine-5' S,S-diphenyl dithiophosphate

2-N-(4,4'-dimethoxytrityl)-2',3'-di-O-methoxymethyleneguanosine

cyclohexylammonium S,S-diphenyl phosphorodithioate

5'-O-acetyl-2-N-(4,4'-dimethoxytrityl)guanosine

Acetic acid (3aR,4R,6R,6aR)-6-(2-{[bis-(4-methoxy-phenyl)-phenyl-methyl]-amino}-6-oxo-1,6-dihydro-purin-9-yl)-2-methoxy-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl ester