Used in solid-phase oligonucleotide synthesis, this phosphoramidite enables the incorporation of a chlorophenyl-modified nucleotide into DNA strands. The modification enhances oligonucleotide stability and can improve binding affinity in diagnostic probes and antisense technologies. It is particularly useful in the development of molecular beacons and SNP detection assays due to the electron-withdrawing chlorophenyl group influencing hybridization properties. Commonly applied in genomics research and probe design for real-time PCR.