5'-O- (4,4'-Dimethoxytrityl) -3'-O- (2-methoxyethyl) uridine

This 3'-O- (2-methoxyethyl) modified uridine derivative features a 5'-DMT protecting group with free 2'-OH and base amino groups. It serves as a critical synthetic intermediate for constructing modified oligonucleotides, which are widely used in antisense, siRNA, and therapeutic aptamer research for both in vitro and in vivo applications.