This chemical is a protected cytidine nucleoside primarily used in the synthesis of oligonucleotides, which are essential in genetic research and therapeutic applications. It features N4-benzoyl protection on the cytosine base, tert-butyldimethylsilyl (TBDMS) protection on the 3'-hydroxyl, and dimethoxytrityl (DMT) protection on the 5'-hydroxyl, ensuring specific reactions occur at desired sites during the assembly of DNA or RNA sequences. This allows for controlled stepwise synthesis and is particularly valuable in solid-phase synthesis, enabling the production of custom oligonucleotides for PCR, gene editing, and antisense therapies. Its stability and selective reactivity make it a critical component in molecular biology and pharmaceutical development.