Used primarily in the synthesis of oligonucleotides, it serves as a protected nucleoside building block. The trityl group safeguards the 5'-hydroxyl, while the acetyl group protects the exocyclic amine, ensuring selective reactions during nucleotide chain assembly. It is crucial in the production of modified RNA and DNA sequences for research, diagnostics, and therapeutic applications, such as antisense oligonucleotides and siRNA. Its protective groups are removed post-synthesis to yield the desired functional nucleic acid.