This compound is primarily utilized in the field of organic synthesis, particularly as a linker in the preparation of modified oligonucleotides and nucleotide analogs. It serves as a key intermediate in the synthesis of modified oligonucleotides, which are essential for research in molecular biology and drug development. The compound's structure, featuring a hexanoic acid ethyl ester chain linked to a phosphoryl group protected with 2-cyanoethoxy and 4,4-diphenylcyclohexyloxy groups, enables its use as a protected phosphate building block for introducing spacers or modifications during the stepwise assembly of DNA or RNA sequences. Its application is critical in the development of antisense oligonucleotides, which are used to regulate gene expression and have therapeutic potential in treating genetic disorders and diseases like cancer. Additionally, it finds use in the production of probes for diagnostic assays and in the study of gene function and regulation.