Used primarily in the field of molecular biology and biochemistry, this chemical serves as a modified nucleoside in the synthesis of oligonucleotides. Its incorporation into DNA or RNA strands enhances the stability and binding affinity of these molecules, making it valuable in research involving nucleic acid interactions. It is particularly useful in the development of antisense oligonucleotides, which are designed to target and modulate specific RNA sequences for therapeutic purposes. Additionally, it plays a role in the study of gene expression and the design of molecular probes for diagnostic applications. Its fluorine modification contributes to improved resistance against enzymatic degradation, making it a critical component in advanced genetic and biochemical studies.