5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-N-methyladenosine is a 5’-O-(4,4'-Dimethoxytriphenylmethy) substitued derivative of the 2’-deoxy N-methyl analogue of Adenosine. It is used in the preparation of oligonucleotides containing N6-methyladenine residues in the GATC site.