5’-O-(4,4’-Dim ethoxytrityl)-thymidine (5’-DMT-dT)

5’-O-TBDMS-5-iodo-2’-deoxyuridine (5’-O-TBDMS-5-I-dU)

5’-O-TBDMS-5-iodo-2’-deoxyuridine (5’-O-TBDMS-5-I-dU)

5′-O-TBS-7-Deaza Iodo dG

N2-Isobutyryl-7-iodo-7-deaza-2’-deoxyguanosine

5’-O-TBS-N2-isobutyryl-7-iodo-7-deaza-2’-deoxyguanosine

5’-O-DMT-N2-ibu-2’-deoxyguanosine (5’-DMT-N2-iBu-dG)

2’-Deoxy-5’-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-guanosine (N2-iBu-5′-O-TBS dG)

5’-O-DMT-N4-Benzoyl-2’-deoxycytidine (5’-DMT-N4-Bz-dC)

5’-O-(4,4’-Dimethoxytrityl)-5-iodo-2’-deoxycytidine (5’-O-DMT-5-I-dC)

5’-O-TBS-5-iodo-2’-deoxycytidine (5’-O-TBDMS-5-I-dC)

5’-O-TBDMS-N4-acetyl-5-iodo-cytidine (5’-O-TBDMS-Ac-5-I-rC)