N2-iso-Butyroyl-5'-O-(4,4'-dimethoxytrityl)-2'-deoxy- fluoro-2'-arabinoguanosine-3'-CED-phosphoramidite is a modified nucleoside amidite that can be used to form special oligonucleotides.
5'-O-(4,4'-Dimethoxytrityl)-2'-deoxy-2'-fluoro-5-methyl-b-D-arabinouridine-3'-CED-phosphoramidite is a thymidine amidite analog and its counterparts display DNA insertion potential, enabling cell labeling and DNA synthesis tracking.