Used in solid-phase oligonucleotide synthesis, particularly for the preparation of modified RNA strands. This N-benzoyl protected adenosine phosphoramidite enables selective protection of the 2'-hydroxyl group through the (triisopropylsilyl oxy)methyl (TOM) group, allowing efficient and high-yield coupling on DNA/RNA synthesizers. The DMT (dimethoxytrityl) group at the 5'-position provides reversible protection, facilitating stepwise chain elongation and purity monitoring during synthesis. The N-benzoyl group protects the exocyclic amine of the adenine base, preventing unwanted side reactions. The phosphoramidite functionality, with a 2-cyanoethyl (CE) protecting group, ensures rapid and efficient formation of phosphite linkages with the growing nucleic acid chain, which are later oxidized to phosphate diesters. Commonly applied in the synthesis of antisense oligonucleotides, siRNA, and diagnostic probes where precise RNA modifications are required. Its stability and reactivity profile make it suitable for automated synthesis with high coupling efficiency.